Please wait… 
Please wait while we process your order,
do not press the back button…
do not press the back button…
Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Part Categories +
- Accessories
- Brakes
- Chassis / Bodywork
- Clothing & Gifts
- Electrical & Relays
- Engine Cooling
- Engine Electrical
- Engine Rebuild Parts
- Engine Tuning
- Exhausts
- Exterior Styling / Spoilers
- Gearbox / Transmission
- Heating / Air Conditioning
- Hydraulics
- Incar / Multimedia
- Interior & Accessories
- Lighting
- Mats & Carpets
- Motorsport and Off-Road
- Parts for Other Cars
- Pedal Cluster
- Rubber Seals
- Seats & Seat Belts
- Service Parts
- Special Offer Parts
- Steering Parts
- Suspension & Axle
- Suspension Upgrades
- Tyres
- Wheel Accessories
- Wheels
Coolant Hoses - Radiator Section
Filter by brand
WATERPIPEKIT03
Product Information
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT03
The product you are viewing cross references to these numbers
Product Information
Radiator pipes replacement kit. It's a common problem with 997 models that front coolant and cross over pipes behind the front wheels start weeping and become badly corroded, this kit replaces the ones you might need Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT03
99710672803
99710662403
99710662303
99710662703
99710672307
99710672003
99710671103
99710675104
99710675204
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant return hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710672803)
1 x Coolant return hose, Right. Porsche 987 Boxster / 987 Cayman / 997 (99710662403)
1 x Coolant supply hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710662303)
1 x Coolant supply hose, Right. Porsche 987 Boxster / 987C Cayman / 997 (99710662703)
2 x Coolant Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710672307)
1 x Water pipe return line. Porsche 987 Boxster / 987C Cayman / 997 (99710672003)
1 x Coolant Supply Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710671103)
1 x Distributor Return Line. Porsche 987 Boxster / 987C Cayman / 997 (99710675104)
1 x Water Coolant Distributor Tube SUPPLY. Porsche 987 Boxster / Cayman / 997 (99710675204)
2 x Connector sleeve. Porsche 987 Boxster / 987C Cayman / 997 (99710655103)
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €869.51
Due In 14 Days
WATERPIPEKIT05
Product Information
It's a common problem with 987 & 997 models that front coolant and cross over pipes behind the front wheels start weeping and become badly corroded, this kit replaces the ones you might need.
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT05
The product you are viewing cross references to these numbers
Product Information
Radiator pipes replacement kit. It's a common problem with 987 & 997 models that front coolant and cross over pipes behind the front wheels start weeping and become badly corroded, this kit replaces the ones you might need.
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT05
99710672803
99710662403
99710662303
99710662703
99710672307
99710672003
99710671103
99710675104
99710675204
99710655103
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant return hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710672803/1)
1 x Coolant return hose, Right. Porsche 987 Boxster / 987 Cayman / 997 (99710662403/1)
1 x Coolant supply hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710662303/1)
1 x Coolant supply hose, Right. Porsche 987 Boxster / 987C Cayman / 997 (99710662703/1)
2 x Coolant Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710672307/1)
1 x Water pipe return line. Porsche 987 Boxster / 987C Cayman / 997 (99710672003/1)
1 x Coolant Supply Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710671103/1)
1 x Distributor Return Line. Porsche 987 Boxster / 987C Cayman / 997 (99710675104)
1 x Water Coolant Distributor Tube SUPPLY. Porsche 987 Boxster / Cayman / 997 (99710675204)
2 x Connector sleeve. Porsche 987 Boxster / 987C Cayman / 997 (99710655103/1)
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €595.76
Due In 10 Days
RADANDPIPEKIT997.OEM
Product Information
This OE Match radiator and coolant pipe replacement kit is an all-in-one set of high-quality hoses and pipes engineered to replace the most common radiator and coolant delivery lines on Porsche 987 Boxster / Cayman and 997 Carrera models. Designed to match the factory routing and fitment, the kit includes radiator feed and return hoses, upper intake pipes, bypass lines, and related OE Match connectors required for a thorough cooling system service or overhaul.
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
As engines age and operate under heat cycles and pressure, rubber hoses and coolant pipes can become soft, cracked, swollen, or restricted, leading to leaks, overheating, and reduced cooling performance. This comprehensive OE Match kit provides direct-fit replacements for the critical coolant lines between the radiator cores, coolant pump, thermostat housing, heater core, and engine block. Each component in the kit is manufactured to meet or exceed the original Porsche specification in hose inner diameter, bend geometry, wall thickness, and connection profile so that it installs cleanly into factory brackets and ports without modification. OE Match materials are chosen for long-term resistance to heat, coolant chemical exposure, and mechanical stress, ensuring durable performance throughout the life of the engine. This kit simplifies maintenance and repair by grouping all key radiator and coolant pipe replacements into one convenient solution, reducing parts hunting and ensuring that worn or deteriorated hoses do not compromise the cooling system’s integrity after other components (such as radiators or pumps) are serviced.
What This Kit Does:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADANDPIPEKIT997.OEM
The product you are viewing cross references to these numbers
Product Information
Radiators and pipes replacement kit.This OE Match radiator and coolant pipe replacement kit is an all-in-one set of high-quality hoses and pipes engineered to replace the most common radiator and coolant delivery lines on Porsche 987 Boxster / Cayman and 997 Carrera models. Designed to match the factory routing and fitment, the kit includes radiator feed and return hoses, upper intake pipes, bypass lines, and related OE Match connectors required for a thorough cooling system service or overhaul.
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
As engines age and operate under heat cycles and pressure, rubber hoses and coolant pipes can become soft, cracked, swollen, or restricted, leading to leaks, overheating, and reduced cooling performance. This comprehensive OE Match kit provides direct-fit replacements for the critical coolant lines between the radiator cores, coolant pump, thermostat housing, heater core, and engine block. Each component in the kit is manufactured to meet or exceed the original Porsche specification in hose inner diameter, bend geometry, wall thickness, and connection profile so that it installs cleanly into factory brackets and ports without modification. OE Match materials are chosen for long-term resistance to heat, coolant chemical exposure, and mechanical stress, ensuring durable performance throughout the life of the engine. This kit simplifies maintenance and repair by grouping all key radiator and coolant pipe replacements into one convenient solution, reducing parts hunting and ensuring that worn or deteriorated hoses do not compromise the cooling system’s integrity after other components (such as radiators or pumps) are serviced.
What This Kit Does:
The coolant and radiator pipes in this kit work together to:
- Carry coolant flow between the engine, thermostat, heater core, coolant pump, and radiator
- Maintain correct pressure and temperature balance across the cooling system
- Support reliable heat rejection through the radiator cores
- Prevent coolant loss and overheating due to brittle or collapsed hoses
- By matching OE geometry and fitment, these hoses help maintain efficient coolant circulation and stable operating temperatures during normal driving as well as spirited use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADANDPIPEKIT997.OEM
99710672803
99710662403
99710662303
99710662703
99710672307
99710672003
99710671103
99710675104
99710675204
99710655103
99710613102
99710613202
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant return hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710672803/1)
1 x Coolant return hose, Right. Porsche 987 Boxster / 987 Cayman / 997 (99710662403/1)
1 x Coolant supply hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710662303/1)
1 x Coolant supply hose, Right. Porsche 987 Boxster / 987C Cayman / 997 (99710662703/1)
2 x Coolant Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710672307/1)
1 x Water pipe return line. Porsche 987 Boxster / 987C Cayman / 997 (99710672003/1)
1 x Coolant Supply Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710671103/1)
1 x Distributor Return Line. Porsche 987 Boxster / 987C Cayman / 997 (99710675104)
1 x Water Coolant Distributor Tube SUPPLY. Porsche 987 Boxster / Cayman / 997 (99710675204)
2 x Connector sleeve. Porsche 987 Boxster / 987C Cayman / 997 (99710655103/1)
1 x Radiator for water coolant fluid. Porsche Boxster 987 / Cayman 987C / 997 (OE Part No. 99710613102 / 99710613202) (99710613102/2)
1 x Radiator for water coolant fluid. Porsche Boxster 987 / Cayman 987C / 997 (OE Part No. 99710613102 / 99710613202) (99710613202/2)
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €955.36
Due In 10 Days
RADANDPIPEKIT997.OE
Product Information
This Genuine Porsche OE radiator and coolant pipe replacement kit is a comprehensive collection of factory-specified hoses, pipes, and coolant connections designed for Porsche 987 Boxster / Cayman and 997 Carrera models. Every component in the kit is a Genuine Porsche part, manufactured to original factory standards for fit, material quality, and long-term durability.
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADANDPIPEKIT997.OE
The product you are viewing cross references to these numbers
Product Information
Radiators and pipes replacement kit.This Genuine Porsche OE radiator and coolant pipe replacement kit is a comprehensive collection of factory-specified hoses, pipes, and coolant connections designed for Porsche 987 Boxster / Cayman and 997 Carrera models. Every component in the kit is a Genuine Porsche part, manufactured to original factory standards for fit, material quality, and long-term durability.
Fits:
Porsche 997 Gen 1
Porsche 997 Gen 2
Porsche 987 Boxster Gen 1
Porsche 987 Boxster Gen 2
Porsche 987C Cayman Gen 1
Porsche 987C Cayman Gen 2
Manual & Tiptronic cars.
This Genuine Porsche OE kit provides a complete solution for renewing the primary coolant and radiator pipework throughout the vehicle. It includes the key upper and lower radiator hoses, coolant feed and return pipes, and related connecting lines that form the core of the Porsche 987 and 997 cooling system.
Each component is engineered by Porsche to maintain exact factory routing, correct internal diameters, and precise sealing interfaces, ensuring optimal coolant flow and pressure balance. Genuine Porsche rubber compounds and pipe materials are designed to withstand extreme thermal cycling, coolant chemistry, and engine vibration over extended service life.
This kit is ideal when replacing radiators, performing water pump or thermostat service, or carrying out preventative maintenance on higher-mileage vehicles. Using all Genuine OE parts ensures the cooling system operates exactly as intended by Porsche engineers, without compromise in fitment, reliability, or performance.
What This Kit Does:The coolant and radiator pipes in this kit work together to:
- Carry coolant flow between the engine, thermostat, heater core, coolant pump, and radiator
- Maintain correct pressure and temperature balance across the cooling system
- Support reliable heat rejection through the radiator cores
- Prevent coolant loss and overheating due to brittle or collapsed hoses
- By matching OE geometry and fitment, these hoses help maintain efficient coolant circulation and stable operating temperatures during normal driving as well as spirited use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADANDPIPEKIT997.OE
99710672803
99710662403
99710662303
99710662703
99710672307
99710672003
99710671103
99710675104
99710675204
99710655103
99710613102
99710613202
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Coolant return hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710672803)
1 x Coolant return hose, Right. Porsche 987 Boxster / 987 Cayman / 997 (99710662403)
1 x Coolant supply hose, Left. Porsche 987 Boxster / 987 Cayman / 997 (99710662303)
1 x Coolant supply hose, Right. Porsche 987 Boxster / 987C Cayman / 997 (99710662703)
2 x Coolant Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710672307)
1 x Water pipe return line. Porsche 987 Boxster / 987C Cayman / 997 (99710672003)
1 x Coolant Supply Hose. Porsche 987 Boxster / 987C Cayman / 997 (99710671103)
1 x Distributor Return Line. Porsche 987 Boxster / 987C Cayman / 997 (99710675104)
1 x Water Coolant Distributor Tube SUPPLY. Porsche 987 Boxster / Cayman / 997 (99710675204)
2 x Connector sleeve. Porsche 987 Boxster / 987C Cayman / 997 (99710655103)
1 x Radiator for water coolant fluid. Porsche Boxster 987 / Cayman 987C / 997 (99710613102)
1 x Radiator for water coolant fluid. Porsche Boxster 987 / Cayman 987C / 997 (99710613202)
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €1,599.85
Orderable - 14 to 28 Days
99710662105
Product Information
Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662103
Click "Zoom in" to see the diagram.
Diagram ref no 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662105
The product you are viewing cross references to these numbers
Product Information
Coolant Bottom Hose Supply LEFT. Connects from the engine coolant supply line to the left side radiator.Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662103
Click "Zoom in" to see the diagram.
Diagram ref no 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662105
99710662105
99710662103
99710662104
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €44.02
Due In 6 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
99710662204/1
Product Information
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662204
The product you are viewing cross references to these numbers
Product Information
Right Hand Radiator Feed Pipe
This right-hand radiator feed pipe is designed for Porsche
997 and 987 Boxster / Cayman models. It forms a vital part of the front-mounted
cooling system, carrying coolant from the engine towards the radiator to ensure
efficient heat dissipation.
Fits:
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Diagram ref no 10
With Porsche’s mid- and rear-engine layouts, coolant must travel long distances between the engine and front radiators. This makes the condition of coolant pipes critical to maintaining stable engine temperatures and preventing overheating.
What This Radiator Feed Pipe Does
The radiator feed pipe transports coolant from the engine to the front radiator on the right-hand side of the vehicle.
It helps:
• Maintain continuous coolant flow through the cooling
system
• Transfer heat away from the engine to the radiator
• Support stable engine operating temperatures
• Ensure efficient cooling under all driving conditions
• Maintain proper pressure within the cooling circuit
Without a properly functioning feed pipe, coolant flow can be restricted or lost entirely.
Why Radiator Feed Pipes Fail
Over time, coolant pipes are exposed to heat, pressure and environmental conditions that lead to wear and failure.
Common causes include:
Corrosion (on metal sections)
Exposure to moisture and road debris can lead to corrosion over time.
Cracking or splitting
Plastic or rubber sections can become brittle and fail.
Seal and joint deterioration
Connections can weaken, leading to leaks.
Age-related wear
Long-term exposure to heat cycles reduces material strength.
Symptoms of a Failing Radiator Feed Pipe
• Coolant leaks under the vehicle
• Low coolant warning messages
• Engine running hotter than normal
• Visible corrosion or damage on the pipe
• Sweet coolant smell after driving
Replacing a worn or leaking pipe is essential to prevent overheating and engine damage.
Why You May Need to Replace This Pipe
Prevent Engine Overheating
A properly functioning feed pipe ensures reliable coolant circulation.
Fix Coolant Leaks
Replacing damaged pipes restores system pressure and eliminates leaks.
Maintain Cooling System Efficiency
Ensures optimal heat transfer and engine performance.
Essential Preventative Maintenance
Cooling system components should be inspected and replaced as they age.
Direct Fit Replacement
Designed to match original Porsche specifications for correct fitment.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662204
99710662204
99710662203
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €26.22
Due In 30+ Days
Shop Securely
12 Month Warranty
Worldwide Delivery
99710662204
Product Information
Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 997 106 622 03
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662204
The product you are viewing cross references to these numbers
Product Information
Coolant Bottom Hose Supply - RIGHT.Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 997 106 622 03
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662204
99710662204
99710662203
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €37.46
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99710662504
Product Information
Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662503
Click "Zoom in" to see the diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662504
The product you are viewing cross references to these numbers
Product Information
Coolant Top Hose - LEFT. Return Line.Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662503
Click "Zoom in" to see the diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662504
99710662504
99710662503
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €40.03
Due In 6 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
99710662605
Product Information
Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662603
- 99710662604
Click "Zoom in" to see the diagram.
Diagram ref no 10.
Product Information
Coolant top hose - RIGHT. Return line.Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662603
- 99710662604
Click "Zoom in" to see the diagram.
Diagram ref no 10.
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €42.86
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99710662605/1
Product Information
Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662603
- 99710662604
Click "Zoom in" to see the diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662605
The product you are viewing cross references to these numbers
Product Information
Coolant top hose - RIGHT. Return line.Fits:
Porsche 987 Boxster / S MKI & MKII 2005>>
Porsche 987C Cayman / S MKI & MKII 2006>>
Porsche 997 GT3 2007-2010
Porsche 997 Carrera 2/2S MKI & MKII 2005>> CABRIO/COUPE
This product supersedes Porsche's old part numbers:
- 99710662603
- 99710662604
Click "Zoom in" to see the diagram.
Diagram ref no 10.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710662605
99710662605
99710662604
99710662603
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €25.52
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99610680103
Product Information
Fits:
Porsche 987 Boxster 2005-12
Porsche 987 Cayman 2006-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman 2017>>
Porsche 718 (982) Cayman GT4 2019>>
Porsche 996 GT3 / RS 1999-05
Porsche 996 Turbo / GT2 2001-05
Porsche 997 Carrera 2005-12
Porsche 997 Turbo / GT2 RS 2007-13
Porsche 997 GT3 / RS 2007-11
Porsche 991 Carrera 2012-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 GT3 / RS 2014-21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680103
The product you are viewing cross references to these numbers
Product Information
O-ring – 46.7 x 3.53 – used in various applications within the car's cooling system.Fits:
Porsche 987 Boxster 2005-12
Porsche 987 Cayman 2006-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman 2017>>
Porsche 718 (982) Cayman GT4 2019>>
Porsche 996 GT3 / RS 1999-05
Porsche 996 Turbo / GT2 2001-05
Porsche 997 Carrera 2005-12
Porsche 997 Turbo / GT2 RS 2007-13
Porsche 997 GT3 / RS 2007-11
Porsche 991 Carrera 2012-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 GT3 / RS 2014-21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680103
99610680103
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Sypder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Price: €5.16
In Stock - 3- 5 Days Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99610680103/1
Product Information
Fits:
Porsche 987 Boxster 2005-12
Porsche 987 Cayman 2006-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman 2017>>
Porsche 718 (982) Cayman GT4 2019>>
Porsche 996 GT3 / RS 1999-05
Porsche 996 Turbo / GT2 2001-05
Porsche 997 Carrera 2005-12
Porsche 997 Turbo / GT2 RS 2007-13
Porsche 997 GT3 / RS 2007-11
Porsche 991 Carrera 2012-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 GT3 / RS 2014-21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680103
The product you are viewing cross references to these numbers
Product Information
O-ring – 46.7 x 3.53 – used in various applications within the car's cooling system.Fits:
Porsche 987 Boxster 2005-12
Porsche 987 Cayman 2006-12
Porsche 981 Boxster 2012-16
Porsche 981 Boxster Spyder 2016
Porsche 981 Cayman 2014-16
Porsche 981 Cayman GT4 2016
Porsche 718 (982) Boxster 2017>>
Porsche 718 (982) Boxster Spyder 2019>>
Porsche 718 (982) Cayman 2017>>
Porsche 718 (982) Cayman GT4 2019>>
Porsche 996 GT3 / RS 1999-05
Porsche 996 Turbo / GT2 2001-05
Porsche 997 Carrera 2005-12
Porsche 997 Turbo / GT2 RS 2007-13
Porsche 997 GT3 / RS 2007-11
Porsche 991 Carrera 2012-19
Porsche 991 Turbo / GT2 RS 2014-20
Porsche 991 GT3 / RS 2014-21
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610680103
99610680103
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Sypder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 R 4.0L (500 Bhp) 2016
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4S / GTS 3.0L (420/450 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19
- Porsche 991.2 Speedster 4.0L (510Bhp) 2019
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
- Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Price: €4.47
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99710663904
Product Information
Pipe from the center mounted radiator to the left side radiator.
Fits:
Porsche 987.1 Boxster 2005-08 Tiptronic transmission
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08 Tiptronic transmission
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 Carrera 2005-08 Tiptronic transmission
Porsche 997.2 Carrera 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710663904
The product you are viewing cross references to these numbers
Product Information
Coolant Bottom Hose. Return Line.Pipe from the center mounted radiator to the left side radiator.
Fits:
Porsche 987.1 Boxster 2005-08 Tiptronic transmission
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08 Tiptronic transmission
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 Carrera 2005-08 Tiptronic transmission
Porsche 997.2 Carrera 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710663904
99710663904
99710663903
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €42.22
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
99710663804
Product Information
Pipe from the right side radiator to the center mounted radiator
Fits:
Porsche 987.1 Boxster 2005-08 Tiptronic transmission
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08 Tiptronic transmission
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 Carrera 2005-08 Tiptronic transmission
Porsche 997.2 Carrera 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710663804
The product you are viewing cross references to these numbers
Product Information
Coolant Hose. Supply Line.Pipe from the right side radiator to the center mounted radiator
Fits:
Porsche 987.1 Boxster 2005-08 Tiptronic transmission
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2005-08 Tiptronic transmission
Porsche 987C.2 Cayman 2009-12
Porsche 997.1 Carrera 2005-08 Tiptronic transmission
Porsche 997.2 Carrera 2009-12
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710663804
99710663804
99710663803
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Price: €38.57
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
Express Delivery
DISPLAYING 1 to 14 (of 14 products)
Also found on these pages
About Coolant Hoses - Radiator Section
Radiator Section Coolant Hoses – Mid & Rear-Engine Porsche Models
Radiator section coolant hoses are essential for managing engine temperature in mid and rear-engine Porsche models. These hoses circulate coolant between the engine and the radiator, ensuring consistent temperature control and preventing overheating under high-performance conditions.
At Design911, we stock a full range of genuine and manufacturer-quality radiator section coolant hoses specifically designed for mid- and rear-engine Porsche models such as the 911, Boxster, and Cayman. Each hose is built to factory specifications for perfect fitment, superior pressure tolerance, and reliable cooling system performance — ensuring your Porsche operates safely and efficiently on road or track.
What Do Radiator Section Coolant Hoses Do?
In Porsche’s mid- and rear-engine designs, coolant must
travel a greater distance between the engine (located at the rear or middle)
and the radiator (at the front). The radiator section hoses form part of
this vital network, helping to:
- Transport
coolant efficiently from the engine to the front radiator.
- Maintain
optimal engine operating temperature for performance and longevity.
- Regulate
coolant flow through the entire system under varying loads.
- Ensure consistent pressure and leak-free circulation.
These hoses are engineered to handle high thermal and mechanical stress, ensuring reliability even in extreme driving conditions.
Why Do Radiator Coolant Hoses Fail?
Due to their exposure to heat, pressure, and constant
coolant flow, radiator section hoses can wear out over time. Common causes of
failure include:
- Material
fatigue from heat cycles and pressure changes.
- Cracks
or splits in aging rubber or plastic connectors.
- Corrosion
or leaks around hose clamps and fittings.
- Swelling
or softening from prolonged coolant exposure.
- Abrasion damage from rubbing against engine or chassis parts.
Symptoms of a failing coolant hose may include coolant leaks under the car, overheating, fluctuating temperature readings, or a low coolant warning light.
Why Replace Faulty Radiator Section Hoses?
A worn or leaking hose can cause coolant loss, overheating, and potential engine damage. Replacing aging hoses is an essential part of preventative maintenance — especially in mid- and rear-engine Porsche models, where efficient cooling is critical.
Benefits of replacement include:
- Restored, leak-free coolant circulation.
- Improved temperature control and system pressure.
- Prevention of costly overheating and engine damage.
- Manufacturer-quality materials for long-term reliability.
All replacement hoses in this range are constructed using reinforced, high-performance rubber compounds and precision-moulded fittings, ensuring durability, flexibility, and perfect compatibility with Porsche cooling systems.
You may also like
Popular Models
Call us
We're happy to help!
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed
Customer Care
Information