Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

Coolant Hoses - Centre Section

Filter by brand
DISPLAYING 17 to 25 (of 25 products)
1 2
Special Order item
99610680107
Product Information
Product Information
O ring seal water pipe. 

porsche

Fits:
Porsche 987 Boxster - 2005 to 2012
Porsche 987 Cayman - 2005 to 2012

Click 'Zoom in' for large parts diagram.
Diagram ref no 39

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610680107
99610680107

The product you are viewing cross references to these numbers
Special Order item
99610680103
Product Information
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Related, superseded, cross reference or alternative numbers for comparison.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
99610680103/1
Product Information
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
Special Order item
99710675204
Product Information
Product Information
Water Coolant Distributor Tube. SUPPLY

porsche

Fits:
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2005>>
Porsche 997 Carrera 3.6L / 3.8L 2005-12
Porsche 997 Turbo MKI & MKII 2007>>
Porsche 997 GT3 2007-11

This product supersedes Porsche's old part numbers:
- 99710615203

Click 'Zoom in' for large parts diagram.
Diagram ref no 8.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710675204
99710615204
99710615203

The product you are viewing cross references to these numbers
99710675204/1
Product Information
Product Information
Water Coolant Distributor Tube. SUPPLY

oematch

Fits:
Porsche 987 Boxster MKI & MKII 2005>>
Porsche 987C Cayman MKI & MKII 2005>>
Porsche 997 Carrera 3.6L / 3.8L 2005-12
Porsche 997 Turbo MKI & MKII 2007>>
Porsche 997 GT3 2007-11

This product supersedes Porsche's old part numbers:
- 99710615203

Click 'Zoom in' for large parts diagram.
Diagram ref no 8.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710675204
99710615204
99710615203

The product you are viewing cross references to these numbers
Special Order item
99610621212
Product Information
Product Information
Water Hose, Supply.
Restore the core coolant routing of your Porsche with this genuine OEM water hose. This 3-way supply hose is designed for models such as the Porsche Boxster (2000-2008) and Porsche Cayman (2006-2008) with automatic Tiptronic transmission. Engineered to Porsche’s exact specifications, this hose ensures correct coolant flow, high durability under heat and pressure, and a perfect fit.

Fits:
  • Porsche Boxster 986 2.7L 2000-02
  • Porsche Boxster S 986 3.2L 2000-02
  • 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 Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08
Cars With Option Codes:
249 - Tiptronic Transmission

Diagram Ref No 5

What This Product Does:

  • This water hose is part of the engine cooling system — it routes coolant between components of the cooling circuit (likely between the water pump / oil cooler / radiator or similar) doing a “3-way” path.
  • It ensures coolant flows properly, helping regulate engine temperature, protect components from overheating, and maintain correct thermal management.
  • Because modern Porsche engines operate with tight tolerances and high performance, correct hose routing, quality of hose material, and correct diameter are important to avoid flow restrictions, leaks or hose collapse.

Symptoms Of Wear / Damage / When To Replace:
  • Visible cracking, bulging, swelling or hose softening at clamps or along the hose length — hose material degrades with heat, age and coolant exposure.
  • Coolant leaks around the hose or hose clamps — signs of coolant around the hose, white or green crust, or low coolant level without obvious reason.
  • Overheating or elevated engine temperatures — if a hose is degraded or collapsed, it can restrict flow and reduce cooling system efficiency.
  • During engine work: If you’re already removing parts of the cooling system (water pump, oil cooler, hoses) and the hose looks old, it’s sensible to replace this unit to avoid future failure.

Why Replacement Matters:
  • Ensuring coolant integrity and flow: A failing hose can compromise coolant flow and temperature regulation, potentially leading to serious engine damage.
  • Prevents unexpected breakdowns: Considering the cost of engine damage, or expenses related to overheating, replacing aged hoses is cost-effective preventive maintenance.
  • Supports longevity and reliability: Especially in performance vehicles like Boxster/Cayman, cooling system maintenance matters for engine life, performance consistency and resale value.
  • Saves labour in the long term: Since many cooling hoses are hidden or routed behind other components, replacing while you have access prevents having to revisit the job later.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99610621212
99610621212
99610621210
99610621206

The product you are viewing cross references to these numbers
Special Order item
99710672003
Product Information
Product Information
Water pipe. RETURN LINE.

porsche

Fits:
Porsche 987 Boxster MKI 2005-08
Porsche 987 Boxster MKII 2009-12
Porsche 987C Cayman MKI 2006-08
Porsche 987C Cayman MKII 2009-12

Porsche 997 Carrera 3.6L / 3.8L MKI 2005-08 COUPE / CABRIO
Porsche 997 Carrera 3.6L / 3.8L MKII 2009-12 COUPE / CABRIO / TARGA
Porsche 997 TURBO / TURBO S / GT2 / GT2 RS 2007>>
Porsche 997 GT3 2007-11

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710672003
99710672003
99710672001
99710672002

The product you are viewing cross references to these numbers
99710672003/1
Product Information
Product Information
Water pipe. RETURN LINE.

oematch

Fits:
Porsche 987 Boxster MKI 2005-08
Porsche 987 Boxster MKII 2009-12
Porsche 987C Cayman MKI 2006-08
Porsche 987C Cayman MKII 2009-12

Porsche 997 Carrera 3.6L / 3.8L MKI 2005-08 COUPE / CABRIO
Porsche 997 Carrera 3.6L / 3.8L MKII 2009-12 COUPE / CABRIO / TARGA
Porsche 997 TURBO / TURBO S / GT2 / GT2 RS 2007>>
Porsche 997 GT3 2007-11

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99710672003
99710672003
99710672001
99710672002

The product you are viewing cross references to these numbers
Special Order item
98710665204
Product Information
Product Information
Water tube return.

porsche

Fits:
Porsche 987.1 Boxster 2.7L 2005-08 Tiptronic Transmission
Porsche 987.1 Boxster 3.2L / 3.4L 2005-08 
Porsche 987.2 Boxster 2.9L 2009-12 PDK Transmission
Porsche 987.2 Boxster 3.4L 2005-08
Porsche 987C.1 Cayman 2.7L 2006-08 Tiptronic Transmission
Porsche 987C.1 Cayman 3.4L 200-08
Porsche 987C.2 Cayman 2.9L 2009-12 PDK Transmission
Porsche 987C.2 Cayman 3.4L 2009-12

Click 'Zoom in' for large parts diagram.
Diagram ref no 16

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

98710665204
98710665204
98710665203
98710665202

The product you are viewing cross references to these numbers
DISPLAYING 17 to 25 (of 25 products)
1 2
Also found on these pages
About Coolant Hoses - Centre Section

Coolant Hoses – Centre Section | Reliable Cooling for Porsche Performance

The centre section coolant hoses are vital components of your Porsche’s engine cooling system, responsible for circulating coolant between the front and rear of the vehicle. These hoses maintain consistent coolant flow through the radiator and engine, ensuring optimal temperature regulation and preventing overheating — essential for both performance and longevity.

At Design911, we supply a full range of genuine and high-quality coolant hoses in the centre section for Porsche models including 911, Boxster, Cayman. Each hose is engineered to deliver factory-accurate fitment, high heat resistance, and long-lasting durability under the extreme pressures of Porsche’s high-performance cooling systems.

What Do Centre Section Coolant Hoses Do?

Coolant hoses act as the lifelines of your Porsche’s cooling system. The centre section hoses connect key parts of the cooling circuit, helping to:

  • Transfer coolant between the engine, radiator, and water pump.
  • Regulate engine temperature during all driving conditions.
  • Maintain system pressure for consistent cooling performance.
  • Prevent overheating and protect the engine from thermal stress.

Their design ensures smooth, efficient coolant flow — especially important in Porsche models with long mid- or rear-engine coolant routing systems.

Why Do Coolant Hoses Fail?

Over time, coolant hoses are exposed to constant pressure, high temperatures, and fluid corrosion. This can lead to:

  • Rubber degradation or cracking from heat cycling.
  • Coolant leaks due to worn hose ends or clamps.
  • Swelling or soft spots caused by chemical breakdown.
  • Abrasion damage from contact with nearby components.
  • Age-related hardening, reducing flexibility and sealing strength.

Common signs of hose failure include visible cracks, coolant puddles under the car, engine temperature fluctuations, or low coolant levels.

Why Replace Faulty Coolant Hoses?

A weakened or leaking coolant hose can quickly lead to overheating, engine damage, or complete coolant loss. Replacing worn hoses ensures your Porsche’s cooling system operates safely and efficiently.

Benefits of replacement include:

  • Restored, leak-free coolant circulation.
  • Improved temperature control and engine protection. 
  • Prevention of overheating and costly repairs.
  • Manufacturer-quality construction and precision fit.

All hoses in this range are made from high-performance rubber compounds and reinforced materials, designed to meet exacting standards for flexibility, strength, and heat resistance.

You may also like
Popular Models