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Porsche > 996 (911) (1997-2005) > Engine Cooling >

Water / Coolant Radiators

Water / Coolant Radiators

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DISPLAYING 1 to 16 (of 57 products)
1 2 3 4
Front Radiator Hose Kit - Coolant Hoses, Pipes & Clamps for the Left, Right & Centre Radiator - for Porsche 996 Turbo 2001-2005 - 99610662574, 99610662578, 99610662579, 99610662674, 99610662677, 99610662678, 99610680216, 99610662174, 99610662178, 99610662179, 99610613775, 99610613777, 99610613778, 99610613878, 99610613874, 99610613883, 99951255200, 99951255201, 99610680215, 99951258509, 99610663873, 99610663875, 99610663876, 99610663973, 99610663975, 99610663976, 99610680217, 99951255100, 99951255101
2
Front Radiator Hose Kit - Coolant Hoses, Pipes & Clamps for the Left, Right & Centre Radiator - for Porsche 996 Turbo 2001-2005
WATERPIPEKIT996TT
Product Information
Product Information
Refresh your 911’s cooling system with this complete front radiator hose kit, which includes supply and return hoses for all three radiators, two breather pipes, and replacement clamps and retaining springs. 

Fits:
Porsche 996 Turbo 2001-05


Kit Contents:
--Radiator Hoses--
1x Genuine Porsche Lower-Left Radiator Hose (99610662579)
1x Genuine Porsche Lower-Right Radiator Hose (99610662678)
2x Genuine Porsche Upper Radiator Hoses (99610662179)
1x Genuine Porsche Left-Side Hose for Centre Radiator (99610663976)
1x Genuine Porsche Right-Side Hose for Centre Radiator (99610663876)

--Breather Hoses--
1x Genuine Porsche Left-Side Breather Hose (99610613778)
1x Genuine Porsche Right-Side Breather Hose (99610613883)

--Retaining Springs--
4x Genuine Porsche Retaining Springs for Upper & Lower Radiator Hoses (99610680216)
2x Genuine Porsche Retaining Springs for Breather Hoses (99610680215)
2x Genuine Porsche Retaining Springs for Centre Radiator Hoses (99610680217)

--Hose Clamps--
4x Genuine Porsche Hose Clamps for Radiator Hoses (99951255201)
2x Genuine Porsche Hose Clamps for Breather Hoses (99951258509)
2x Genuine Porsche Hose Clamps for Centre Radiator Hoses (99951255101)



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Related, superseded, cross reference or alternative numbers for comparison.

WATERPIPEKIT996TT
99610662574
99610662578
99610662579
99610662674
99610662677
99610662678
99610680216
99610662174
99610662178
99610662179
99610613775
99610613777
99610613778
99610613878
99610613874
99610613883
99951255200
99951255201
99610680215
99951258509
99610663873
99610663875
99610663876
99610663973
99610663975
99610663976
99610680217
99951255100
99951255101

The product you are viewing cross references to these numbers
Radiator for Water Coolant Fluid, SET OF 2. Porsche 996 / Boxster 986 (OE Part No. 99610613151 / 99610613251) - 8MK376714291, 99610613151, 99610613151, 99610613150, 8MK376713791, 99610613251
2
Radiator for Water Coolant Fluid, SET OF 2. Porsche 996 / Boxster 986 (OE Part No. 99610613151 / 99610613251)
RADKIT99606
Product Information
Product Information
Radiators for water coolant fluid
This OE Match Water Radiator Set includes both left and right water radiators - designed as direct-fit replacements for the original factory cooling cores on Porsche 996 (911) & 986 Boxster models. Together they form the central cooling system components responsible for controlling engine temperature and preventing overheating.
SET OF 2

Fits:
Porsche 996 C2 / C4 / GT3 1997 - 2005
Porsche 986 Boxster 1997 - 2004

The cooling system of the Porsche 996 and 986 is based on two radiators (left and right) that effectively remove heat from the engine coolant under all operating conditions, from everyday driving to dynamic use on the road.

Each radiator is engineered to match original Porsche specifications for:
•  Core dimensions and fin density
•  Mounting points and hose connections
•  Coolant flow capacity
•   Heat transfer performance

This OE Match radiator set delivers balanced cooling and thermal stability by replacing both cores at once, ensuring equal efficiency on each side of the system. Manufactured from high-quality materials with durable aluminium cores and corrosion-resistant tanks, these radiators offer long service life and effective heat rejection with reliable fitment.

Direct replacement for the original Porsche components, this set installs using the existing mounting brackets, hoses, and hardware, making it ideal for cooling system overhauls, radiator failure replacement, or preventative maintenance on higher-mile vehicles.

A failing radiator can lead to engine overheating, coolant loss, reduced performance, and even engine damage if left unaddressed. Symptoms such as rising temperature gauge readings, coolant leaks, or steam from the engine bay indicate a compromised cooling core. Replacing both radiators as a matched set ensures consistent cooling efficiency and balanced performance across the entire system.

Replace this radiator set if you notice:
•  Persistent engine overheating
•  Leaks or corrosion on radiator cores
•  Bent, dented, or clogged cooling fins
•  Reduced heater performance
•  After front-end collision or cooling system service
•  During routine coolant system overhaul

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

RADKIT99606
8MK376714291
99610613151
99610613151
99610613150
8MK376713791
99610613251

The product you are viewing cross references to these numbers
Radiator for Water Coolant Fluid. Porsche 996 / Boxster 986 (OE Part No. 99610613151 / 99610613251) - 8MK376714291, 99610613151, 99610613151, 99610613150, 8MK376713791, 8MK 376 713-791, 99610613251, 99610613181
2
Radiator for Water Coolant Fluid. Porsche 996 / Boxster 986 (OE Part No. 99610613151 / 99610613251)
RADKIT99605
Product Information
Product Information
Radiator for Water Coolant Fluid. Porsche 996 / Boxster 986

mahle

SET OF 2

Fits:
Porsche 996 C2 / C4 / GT3 1997-05
Porsche 986 Boxster 1997-2004

Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.

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

RADKIT99605
8MK376714291
99610613151
99610613151
99610613150
8MK376713791
8MK 376 713-791
99610613251
99610613181

The product you are viewing cross references to these numbers
Radiator for water coolant fluid. Porsche 996 Turbo / 996 C4S / 997 Turbo (Part No. 99610613174 / 99610613272) - 99610613174, 50548, 50549, 99610613172, 99610613272, 8MK 376 765-131, 8MK 376 765-141, 99610613270 - CR1396000P, CR1397000P
1
Radiator for water coolant fluid. Porsche 996 Turbo / 996 C4S / 997 Turbo (Part No. 99610613174 / 99610613272)
RADKIT99607
Product Information
Product Information
Radiator for water coolant fluid.
SET OF 2

mahle

Fits:
Porsche 996 Turbo / GT2 / C4S 1998-05
Porsche 997 Turbo MK1 & MKII

Radiator fluid, or coolant, is the most important part of your car's cooling system, which protects your engine from overheating. Low coolant can lead to a breakdown and expensive repairs.

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

RADKIT99607
99610613174
50548
50549
99610613172
99610613272
8MK 376 765-131
8MK 376 765-141
99610613270

The product you are viewing cross references to these numbers
Radiator Water Cooling kit Porsche 996 >>2001 / 986 Boxster - 99610603753
1
Radiator Water Cooling kit Porsche 996 >>2001 / 986 Boxster
RADKIT99601
Product Information
Product Information
Reduces the high water running temperature, which in turn will protect your engine.
Lower operating water temperature up to 60° F

Fits:
Porsche 996 3.4L C2/C4/C4S Upto 2001 Pre-Face Lift
Manual cars only.

Porsche 996 3.6L C2/C4/C4S Upto 2001 Pre-Face Lift
Manual cars only.

Porsche Boxster 2.5L / 2.7L
Manual cars only.

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

RADKIT99601
99610603753

The product you are viewing cross references to these numbers
Radiator water cooling kit. Porsche 996 / 986 Boxster - 9965055610201C, 99650448702, 90037807401, 99959186901, 99950755001, 93011343000, 99650448502, 90037803601, 99657514104, 99610666656, 99610666558, 99951255201, 99951249900, 99610603753
1
Radiator water cooling kit. Porsche 996 / 986 Boxster
RADKIT99602
Product Information
Product Information
Reduces the high water running temperature, which in turn will protect your engine.
Lower operating water temperature up to 60° F

Fits:
Porsche 996 3.4L C2/C4/C4S 2002 Onwards Face Lift
Manual cars only.

Porsche 996 3.6L C2/C4/C4S 2002 Onwards Face Lift
Manual cars only.

Porsche Boxster 2.5L / 2.7L
Manual cars only.

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

RADKIT99602
9965055610201C
99650448702
90037807401
99959186901
99950755001
93011343000
99650448502
90037803601
99657514104
99610666656
99610666558
99951255201
99951249900
99610603753

The product you are viewing cross references to these numbers
Radiator water fans, SET OF 2 Porsche 986 Boxster / 996 - 99662413500
2
Radiator water fans, SET OF 2 Porsche 986 Boxster / 996
99662413500/2KIT
Product Information
Product Information
Radiator water fans. SET OF 2.
This package includes two radiator cooling fans - one for the left and one for the right side. Upgrading an aging cooling system by replacing both fans at once for consistent performance and longevity.

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2, C4, GT3 1998 - 2005

Diagram ref no 2.

The purpose of this radiator cooling fan is to draw air through the radiator and air conditioning condenser when the vehicle's speed is low - for example, when idling or in traffic - helping maintain the proper coolant and cooling system temperature. This keeps the engine cool and the air conditioning system operating efficiently.

Key benefits of paired replacement:
• Ensures symmetrical airflow and balanced cooling efficiency.
• Reduces load on each fan, potentially extending lifespan compared to a single fan doing all the work.
• Provides redundancy - if one fan fails, the second may help prevent immediate overheating during transit or cooldown.
• Simplifies maintenance by replacing both fans together, avoiding mismatched wear and preserving consistent airflow characteristics.

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

99662413500
99662413500

The product you are viewing cross references to these numbers
Water / Coolant Radiator and pipe kit. Porsche 996 C4S
1
Water / Coolant Radiator and pipe kit. Porsche 996 C4S
RADANDPIPEKIT996C4S
Product Information
Product Information
Water / coolant radiator and pipe kit.

Fits:
Porsche 996 C4S

Kits comes with both water radiators, supply and return hoses, breather pipes and all clips and clamps needed.
Water and Air Conditioning (Air Con) Radiator set. Porsche 996 / Boxster 986 / 996 GT3 - 94457314301, 99757391101, 99610613151, 99610613251
3
Water and Air Conditioning (Air Con) Radiator set. Porsche 996 / Boxster 986 / 996 GT3
RADKIT996-986.OEM
Product Information
Product Information
OE Match Complete Radiator + A/C Condenser & Desiccator Set.
This OE Match Radiator Water + A/C Condenser & Desiccator Set is a complete cooling and climate control core replacement solution for Porsche 986 Boxster and 996 911 models equipped with factory air conditioning. It combines the essential engine cooling radiators with the front A/C condenser and desiccator (receiver drier) — components that work together to manage engine and HVAC temperatures efficiently.

Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 996 C2 / C4 1998 - 2005
Porsche 996 GT3 MKI
Porsche 996 GT3 MKII
Porsche 996 GT3 RS

Kit Includes:
•  OE Match Water Radiators (Left & Right) – 99610613181 & 99610613251
•  OE Match Air Conditioning Condensers  (Left & Right) – 2x 9975739101
•  OE Match A/C Desiccator / Receiver Drier – 94457314301
•  All necessary mounts, fittings, and brackets for direct replacement -  99970743441 &  99970726240

This set is ideal for:
•  Cooling system overhauls
•  A/C performance restoration
•  Radiator and condenser replacement due to damage or age
•  Preventative maintenance on high-mileage vehicles

Water Cooling System Components
The OE Match dual water radiators (99610613181 & 99610613251) replicate the original Porsche engine cooling cores, providing efficient heat exchange to maintain stable engine operating temperatures. Built with robust aluminium cores and corrosion-resistant tanks, these radiators handle long-term thermal cycling and high engine loads.

Air Conditioning Condenser & Desiccator
The OE Match A/C condenser is engineered to fit the factory A/C system, matching the original dimensions, port locations, and cooling capacity required for proper refrigerant condensation. Integrated within this module is the desiccator (receiver drier) - a critical component that removes moisture and contaminants from the refrigerant circuit, protecting the compressor and optimizing system efficiency.

Together, the radiators and condenser form the front-mounted heat exchangers that manage both engine coolant and A/C refrigerant heat rejection. With correct fitment and performance characteristics, this set restores proper engine temperature control and air conditioning cooling performance to factory expectations.

All components in this set are OE Match quality - meaning they are engineered to match original Porsche forms, fitments, and performance.

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

RADKIT996-986.OEM
94457314301
99757391101
99610613151
99610613251

The product you are viewing cross references to these numbers
Water coolant front radiator pipe kit. Porsche 996 C2/ C4 automatic/ tiptronic cars - 99610662255, 99610662654, 99951252201, 99951249900, 99951258505, 99610613753, 99610613853, 9961066558, 99610666656
2
Water coolant front radiator pipe kit. Porsche 996 C2/ C4 automatic/ tiptronic cars
WATERPIPEKIT996A
Product Information
Product Information
Water / Coolant radiator pipe kit. Porsche 996 C2/ C4 automatic/ tiptronic cars

Fits:
Porsche 996 C2/C4 Automatic/ Tiptronic cars (not C4S) 

Kits comes with both supply and return hoses, breather pipes and all clips and clamps needed.


Diagram ref: 

#8 Left & Right 

#9 Left & Right 

#11 Left & Right 

#27 clamp  x 2

#10 clamp  x 4

#12 clamp  x 6



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

WATERPIPEKIT996A
99610662255
99610662654
99951252201
99951249900
99951258505
99610613753
99610613853
9961066558
99610666656

The product you are viewing cross references to these numbers
Water coolant front radiator pipe kit. Porsche 996 C2/ C4 manual cars - 99610662158, 99610662255, 99610662558, 99610662654, 99951252201, 99951249900, 99951258505, 99610613753, 99610613853
2
Water coolant front radiator pipe kit. Porsche 996 C2/ C4 manual cars
WATERPIPEKIT996M
Product Information
Product Information
Water / Coolant radiator pipe kit. Porsche 996 C2/ C4 manual cars

Fits:
Porsche 996 C2/C4 Manual cars (not C4S) 

Kits comes with both supply and return hoses, breather pipes and all clips and clamps needed.


Diagram ref: 

#8 Left & Right 

#9 Left & Right 

#11 Left & Right 

#27 clamp  x 2

#10 clamp  x 4

#12 clamp  x 6



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

WATERPIPEKIT996M
99610662158
99610662255
99610662558
99610662654
99951252201
99951249900
99951258505
99610613753
99610613853

The product you are viewing cross references to these numbers
Water coolant front radiator pipe kit. Porsche 996 C4S - 99610662579, 99610662678, 99610662179, 99951249900, 99951255201, 99951258509, 99610613778, 99610613883, 99610633400
2
Water coolant front radiator pipe kit. Porsche 996 C4S
WATERPIPEKIT996C4S
Product Information
Product Information
Water / Coolant radiator pipe kit. 
This OE Match radiator pipe kit is a complete replacement set of upper and lower radiator coolant pipes and hoses engineered to match the original Porsche parts used on the Porsche 996 Carrera 4S (C4S) cooling system. It includes all the essential coolant routing hoses and hard pipes needed to renew the cooling pathways between the engine, water pump, thermostat, and radiators.

Fits:
Porsche 996 C4S Manual Cars

Diagram ref no 8, 9, 10, 11, 12 and 27

Over time, coolant hoses and soft pipes can become soft, swollen, cracked, or brittle due to heat cycling, chemical exposure, and age. Hardened or deteriorated pipes can restrict flow or fail unexpectedly, potentially leading to overheating and engine damage. This comprehensive OE Match kit provides the key upper and lower cooling line replacements in one convenient package, ensuring reliable coolant flow and restoring system integrity.

This coolant pipe kit forms the primary coolant circulation pathways between the engine and radiators. It carries hot coolant away from the engine to the radiators for heat rejection and returns cooled fluid back to the engine to maintain optimal operating temperature - a critical function for engine health, performance, and longevity.

Coolant hoses and pipes are wear items in the cooling system. Age and thermal stress can weaken hoses, leading to leaks, coolant loss, and restricted flow - which in turn causes engine overheating and reduced performance. A comprehensive replacement kit helps ensure all major coolant pathways are renewed simultaneously, reducing the likelihood of future failures and maintaining stable engine temperatures under all driving conditions.

Replacing components as a matched kit also helps minimise the risk of partial repairs, where replacing only one hose still leaves adjacent aged hoses vulnerable to failure.

When to replace:
•  Visible coolant seepage or wet spots
•  Hoses that feel soft, swollen, or cracked to the touch
•  Radiator removal, thermostat water pump service, or engine cooling overhaul
•  Heat cycling has caused brittleness or surface degradation
•  Preventive maintenance on high-mile or enthusiast vehicles

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

WATERPIPEKIT996C4S
99610662579
99610662678
99610662179
99951249900
99951255201
99951258509
99610613778
99610613883
99610633400

The product you are viewing cross references to these numbers
Water coolant front radiators & pipes kit. Porsche 996 C2/ C4 automatic/ tiptronic cars - 99610662255, 99610662654, 99610613753, 99610613853, 9961066558, 99610666656, 99610613151, 99610613150, 99610613251, 99610603750, 99610603751, 99610603752, 99610603753
4
Water coolant front radiators & pipes kit. Porsche 996 C2/ C4 automatic/ tiptronic cars
WATERPIPEKIT996A.1
Product Information
Product Information
Water coolant front radiators & pipes kit. Porsche 996 C2/ C4 automatic/ tiptronic cars

Fits:
Porsche 996 C2/C4 Automatic/ Tiptronic cars (not C4S) 

Kits comes with three radiators ,supply and return hoses, breather pipes and all clips and clamps needed.


Diagram ref: 

#1 Left & Right 

#8 Left & Right 

#9 Left & Right 

#11 Left & Right 

#27 clamp  x 2

#10 clamp  x 4

#12 clamp  x 6



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

WATERPIPEKIT996A.1
99610662255
99610662654
99610613753
99610613853
9961066558
99610666656
99610613151
99610613150
99610613251
99610603750
99610603751
99610603752
99610603753

The product you are viewing cross references to these numbers
Water coolant front radiators & pipes kit. Porsche 996 C2/ C4 manual cars - 99610662158, 99610662255, 99610662558, 99610662654, 99610613753, 99610613853, 99610613151, 99610613150, 99610613251
4
Water coolant front radiators & pipes kit. Porsche 996 C2/ C4 manual cars
WATERPIPEKIT996M.1
Product Information
Product Information
Water coolant front radiators & pipes kit. Porsche 996 C2/ C4 manual cars

Fits:
Porsche 996 C2/C4 Manual cars (not C4S) 

Kits comes with both radiators , supply and return hoses, breather pipes and all clips and clamps needed.


Diagram ref: 

#1 Left & Right 

#8 Left & Right 

#9 Left & Right 

#11 Left & Right 

#27 clamp  x 2

#10 clamp  x 4

#12 clamp  x 6



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

WATERPIPEKIT996M.1
99610662158
99610662255
99610662558
99610662654
99610613753
99610613853
99610613151
99610613150
99610613251

The product you are viewing cross references to these numbers
Water coolant radiator and pipe kit. PORSCHE 996 Turbo
1
Water coolant radiator and pipe kit. PORSCHE 996 Turbo
RADANDPIPEKIT996TT
Product Information
Product Information
Water / coolant radiator and pipe kit.

Fits:
Porsche 996 Turbo

Kits comes with both water radiators, supply and return hoses, breather pipes and all clips and clamps needed.
Radiator Water Bracket Support. Porsche 996 GT2 - 99650452430, 99650452330
1
Radiator Water Bracket Support. Porsche 996 GT2
Special Order item
99650452
Product Information
Product Information
Radiator Water Bracket Support.

porsche

Fits:
Porsche 996 GT2 2001-05

Left or right. Price is for each.
Please select below

Click pictrue for large parts diagram.
Diagram Ref No 28.

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

99650452
99650452430
99650452330

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 57 products)
1 2 3 4
Also found on these pages
About Water / Coolant Radiators

Water Coolant Radiators – Efficient Cooling Performance for Porsche Engines

Water coolant radiators are the heart of your Porsche’s cooling system, responsible for maintaining the perfect balance between performance and engine temperature. These components dissipate heat from the coolant as it passes through the radiator core, ensuring your engine operates at peak efficiency while preventing overheating - whether you’re cruising through city streets or pushing hard on the track.

At Design911, we offer a comprehensive range of genuine and high-quality water coolant radiators for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and transaxle cars. Each radiator is precision-engineered to provide efficient heat exchange, corrosion resistance, and a perfect fit, ensuring long-lasting performance and reliability for every driving condition.

What Do Water Coolant Radiators Do?

Radiators are essential to your Porsche’s engine cooling system. Their primary functions include:

  • Transferring heat from the coolant to the surrounding air.
  • Regulating coolant temperature to prevent engine overheating.
  • Supporting overall thermal balance for performance and emissions efficiency.
  • Enhancing reliability by maintaining optimal operating temperatures in all climates.

By efficiently dissipating heat, radiators protect your engine, prevent premature wear, and maintain consistent performance under pressure.

Why Do Radiators Fail?

Despite being built for endurance, radiators experience constant thermal stress, exposure to pressure, and environmental elements that can lead to failure. Common causes include:

  • Corrosion or rust due to contaminated or old coolant.
  • Leaks from cracked tanks, damaged cores, or failing seals.
  • Blockages caused by debris or scale build-up inside coolant passages.
  • Physical damage from road debris or stone impacts.
  • Coolant contamination from oil or combustion residue.

Symptoms of radiator failure include overheating, coolant loss, visible leaks, or fluctuating temperature readings.

Why Replace a Faulty Radiator?

A damaged or inefficient radiator compromises your Porsche’s cooling system, risking overheating and potential engine damage. Replacing your radiator with a high-quality, manufacturer-standard unit ensures optimal cooling efficiency, reliability, and peace of mind.

Benefits of replacement include:
Restored cooling efficiency and heat dissipation.
Prevention of engine overheating and coolant loss.
Enhanced vehicle performance and fuel economy.
Durable, corrosion-resistant materials for long service life.

All radiators in our range are designed using premium aluminium cores, precision welds, and reinforced end tanks to ensure excellent cooling capacity, leak prevention, and long-term reliability — perfect for both standard and high-performance Porsche applications.

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