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Water / Coolant Radiators
By OE Match
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Coolant hoses link the engine, radiators and associated pipework so coolant can circulate and help keep operating temperatures within the intended range. A matched kit provides the key radiator hose pieces needed in one package for a consistent renewal of this part of the system.
Fits
Porsche 955 Cayenne S 4.5L V8 2003 – 2006
Porsche 955 Cayenne Turbo 4.5L 2003 – 2006
Porsche 955 Cayenne Turbo S 4.5L 2006>>
Diagram ref no 9, 10 and 11
Functions:
• Route coolant between engine and radiators
• Support stable operating temperatures
• Help maintain coolant pressure integrity in the radiator circuit
• Group related hose parts for a coordinated replacement
Why Replacement Matters
Cooling system hoses and pipes age with heat cycles, pressure and coolant exposure. Rubber can harden or soften, plastic fittings may fatigue, and joints can begin to seep, particularly on older Cayenne models. Replacing ageing or suspect radiator hoses as a kit helps restore consistent coolant flow and pressure, reduces the risk of leaks developing at different times, and supports reliable temperature control. Proactive renewal is often chosen after signs of staining around joints, a persistent coolant smell or small leaks following hot use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPE955T
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
This radiator water / coolant and pipe kit is a replacement cooling system kit for Porsche 955 Cayenne S and Cayenne Turbo models. It includes OE Match radiator water / coolant component together with related OE Match coolant pipes required for cooling system service or repair.
Fits:
Porsche 955 Cayenne S 4.5L V8 2003 - 2006
Porsche 955 Cayenne Turbo 4.5L 2003 - 2006
Porsche 955 Cayenne Turbo S 4.5L 2006>>
Diagram ref no 9, 10, 11 + Radiator
The kit helps restore correct coolant flow through the front cooling system. The radiator water / coolant component and pipes work together to carry coolant between the engine cooling circuit and radiator area, helping regulate engine temperature and maintain reliable cooling performance.
Kit Contents
1 x OE Match Radiator water / coolant component
1 x OE Match Coolant pipe, Supply
1 x OE Match Coolant pipe, Return
2 x Genuine Porsche Radiator Coolant Hose Clamps
Functions
• Replaces key radiator water / coolant system components
• Includes coolant pipes for front cooling system service
• Helps maintain correct coolant flow and circulation
• Supports stable engine operating temperature
• Helps prevent coolant leaks from aged or damaged pipes
• Suitable for cooling system repair or preventative maintenance
• OE Match replacement kit for Porsche 955 Cayenne cooling service.
Why Replace This Kit?
Radiator and coolant pipe components are exposed to heat cycles, coolant pressure, vibration, road dirt, corrosion, and age. Over time, pipes can crack, corrode, leak, block, or suffer damaged connections, while radiator-related components can become weak or inefficient. Replacing these parts together helps restore reliable coolant flow and reduces the risk of overheating or coolant loss.
When to Replace This Kit
• Coolant leaks are present around the radiator or pipe area
• Coolant pipes are cracked, corroded, swollen, brittle, or damaged
• Engine temperature is unstable or overheating is present
• Cooling system pressure loss is being investigated
• Radiator or front cooling system service is being carried out
• Preventative cooling system maintenance is required
• The vehicle is undergoing Porsche Cayenne S or Cayenne Turbo restoration.
Where it fits on the car
This kit fits within the radiator water / coolant pipe system on Porsche 955 Cayenne S and Cayenne Turbo models. It forms part of the engine cooling circuit and front radiator coolant routing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
RADKIT955T.OEM
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>

Fits:
Porsche 955 Cayenne 4.5L S 2003-06
Porsche 955 Cayenne 4.5L Turbo
Diagram ref Nos. 7, 9, 10, 11, 12, 13, 16, 17, 20
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
WATERPIPEKIT01
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06

Fits:
Porsche 955 MKI Cayenne S 2003-06
Porsche 955 MKI Cayenne Turbo 2003-06
Click 'Zoom in' for large parts diagram.
Diagram ref no 16.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810625900
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06

Fits:
Porsche 955 MKI Cayenne S 2003-06
Porsche 955 MKI Cayenne Turbo 2003-06
Click 'Zoom in' for large parts diagram.
Diagram ref no 17.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810626900
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
Price is for each.

Fits:
Porsche 955 MKI Cayenne S 2003-06
Porsche 955 MKI Cayenne Turbo 2003-06
Click 'Zoom in' for large parts diagram.
Diagram Ref No 18
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94810627900
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06

Fits:
Porsche 955 MKI Cayenne S 2003-06
Porsche 955 MKI Cayenne Turbo 2003-06
Click 'Zoom in' for large parts diagram.
Diagram Ref No 8.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970737041
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
The OE Match Radiator for Water Coolant Fluid is a premium-quality replacement engine cooling component designed to efficiently dissipate heat from the engine coolant on compatible Porsche models. Manufactured to OE specifications for fit, cooling performance and durability, this radiator ensures the engine maintains its optimum operating temperature, protecting vital engine components from overheating while delivering reliable performance in all driving conditions.
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Manufactured from lightweight, high-efficiency aluminium with precision-brazed coolant tubes and densely packed cooling fins, the radiator is engineered to maximise heat transfer while withstanding coolant pressure, thermal cycling, vibration and harsh road conditions. Reinforced end tanks and precision-machined mounting points ensure direct OE-style fitment and seamless integration with the vehicle's original cooling system, making it the ideal replacement during cooling system repairs or preventative maintenance.
What This Product Does:
- Dissipates heat from the engine coolant.
- Maintains the engine at its correct operating temperature.
- Supports efficient engine cooling under all driving conditions.
- Circulates coolant through the cooling system.
- Helps prevent engine overheating.
- Works with the water pump, thermostat and cooling fans to regulate engine temperature.
- Restores factory cooling system performance.
- Forms an essential part of the engine cooling system.
Symptoms Of Wear Or Failure:
- Engine overheating.
- Coolant leaks from the radiator.
- Low coolant level requiring frequent topping up.
- Visible corrosion or damage to the cooling fins.
- Cracked radiator end tanks.
- Blocked or restricted coolant passages.
- Steam or coolant escaping from the radiator.
- Poor cooling performance during heavy traffic or hot weather.
- Coolant residue around the radiator.
- Engine temperature warning light or overheating alerts.
Why Replacement Matters:
- The radiator is continually exposed to high coolant temperatures, internal pressure, road debris, vibration and environmental contaminants. Over time, corrosion, impact damage or internal blockages can reduce its cooling efficiency or cause coolant leaks.
- A damaged or inefficient radiator can lead to engine overheating, coolant loss and reduced cooling performance. Continued operation with a faulty radiator may result in severe engine damage, including warped cylinder heads, failed head gaskets and premature wear of internal engine components.
- Replacing a worn or damaged radiator restores the cooling system's ability to efficiently regulate engine temperature and maintain reliable engine operation. The OE Match Radiator for Water Coolant Fluid is manufactured to OE standards using premium-quality materials, providing factory-style fitment, outstanding heat dissipation and long-lasting durability, helping protect your Porsche engine and maintain optimum performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510614201
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10

Fits:
Porsche 955 Cayenne 2003-06
Porsche 957 Cayenne 2007-09
Click 'Zoom in' for large parts diagram.
Diagram ref no 18
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95562413401
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 957 Cayenne 3.6L 2007-10

Fits:
Porsche 955 Cayenne S 2003-06 Chassis: F 9P6LA 44108>> (IT91/I0U1/I0Y3)
Porsche 957 Cayenne 3.6L 2007-10
* IT91 - Units for engine PR no. D9K
* I0Y1 - Standard climatic zone
* I0Y3 - Cold climatic zone
Click 'Zoom in' for large parts diagram.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95562413601
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Water Cooling Pipe System Upgrade
The OE Match Water Cooling Pipe System Upgrade is a
permanent solution to one of the most common and well-known cooling system
failures affecting the first-generation Porsche 955 Cayenne 4.5L V8 S and Turbo
models built between 2003 and 2006.
Fits:
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
Diagram ref Nos 7, 9, 10, 11, 12, 13, 16 and 17
The original factory cooling system uses a series of plastic coolant pipes located beneath the intake manifold to carry coolant between the engine block, thermostat housing and cylinder heads. While perfectly adequate when new, years of repeated heat cycles cause these plastic pipes to become brittle and lose their structural integrity. Eventually they can soften, crack or separate from their bonded joints, leading to sudden coolant loss and rapid engine overheating.
Porsche later introduced an improved aluminium pipe design to eliminate this weakness. This OE Match upgrade kit replaces the original plastic coolant pipes with durable alloy replacements, providing a long-term repair that is far more resistant to heat, pressure and age-related deterioration.
A failed coolant pipe can result in coolant leaking into the engine valley beneath the intake manifold, where it may initially go unnoticed. Drivers often first discover the problem through unexplained coolant loss, coolant odours, warning messages or engine overheating. Continuing to drive with a leaking pipe can lead to severe engine damage, making early replacement a wise preventative maintenance upgrade.
Replacement is strongly recommended if the intake manifold is already being removed for other engine work, such as starter motor replacement, knock sensor replacement or general engine servicing. Many owners also choose to install the alloy upgrade proactively once their Cayenne reaches higher mileage or shows signs of cooling system deterioration.
Features & Benefits
- OE Match alloy water cooling pipe upgrade kit
- Replaces the original plastic coolant pipes
- Eliminates a common failure point on early 4.5L V8 engines
- Improved resistance to heat and coolant pressure
- Reduces the risk of sudden coolant loss and engine overheating
- Ideal preventative maintenance upgrade
- Suitable for Porsche 955 Cayenne 4.5L S and Turbo models (2003-2006)
- Direct replacement for the original cooling pipe assembly
Porsche 955 Cayenne Alloy Water Cooling Pipe Upgrade
The first-generation Porsche Cayenne is renowned for its performance and versatility, but owners of the early 4.5-litre V8 models are often familiar with the factory plastic coolant pipe issue. Upgrading to the later alloy pipe design is widely regarded as one of the most important preventative maintenance improvements for these vehicles.
At Design911, we supply high-quality OE Match cooling system components that restore reliability while maintaining original fitment standards. Whether you're carrying out preventative maintenance, repairing a coolant leak or rebuilding your engine, this alloy coolant pipe upgrade offers lasting peace of mind.
Why Upgrade to Alloy Coolant Pipes?
Unlike the original plastic pipes, alloy pipes are unaffected by prolonged exposure to engine heat and pressure. Once installed, they provide a significantly more durable cooling system capable of withstanding the demanding operating temperatures of the Porsche V8 engine.
Common Symptoms of Failing Plastic Coolant Pipes
- Unexplained coolant loss
- Coolant smell after driving
- Coolant pooling beneath the intake manifold
- Low coolant warning messages
- Rising engine temperatures or overheating
- Steam from the engine bay
Replacing the plastic coolant pipes before failure helps avoid costly overheating repairs and significantly improves long-term engine reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
948106059KIT
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10

Fits:
Porsche 955 Cayenne 4.5L (V8) Turbo 2003-06 (option code: T90)
Porsche 955 Cayenne 4.5L (V8) 2003-06 F >>9P-6LA44 107 (option code: T91)
Porsche 955 Cayenne 4.5L (V8) 2003-06 F 9P-6LA44 108>> (option code: T91 / 0Y2 - Tropical climatic zone)
Porsche 957 Cayenne 4.8L (V8) 2007-11 (option code: 0Y2 - Tropical climatic zone)
Porsche 957 Cayenne 4.8L (V8) Turbo 2007-11 (option code: D5Z)
Porsche 957 Cayenne 3.0L Diesel 2007-11 (option code: D50)
Click 'Zoom in' for large parts diagram.
Diagram ref no
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95562413500
The product you are viewing cross references to these numbers
OEMatch Water / Coolant Radiators — Fit, Function, Confidence
OEMatch supplies water and coolant radiators for Porsche models. Radiators control engine temperature by transferring heat from coolant to air, helping to prevent overheating and limiting thermal stress on engine components. This overview explains common types, failure modes and what to check when a Porsche radiator needs replacement.
Available Types
- Aluminium-core radiators with welded construction for efficient heat transfer
- Radiators with reinforced end tanks for higher-load or heavy-use applications
- Application-specific units for transaxle and front-engine Porsche models, including designs tuned for cooling capacity and packaging
Understanding OEMatch Water / Coolant Radiators
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original water and coolant radiators. OE (Original Equipment) refers to parts matching original specifications for the water and coolant radiators and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM water and coolant radiators engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Radiators move heat from the engine coolant into the airstream via a core of tubes and fins; end tanks and joints direct flow and sustain pressure. Materials and construction influence resistance to corrosion, mechanical damage and thermal cycling. OEMatch catalogues thousands of part numbers and OE cross-references to support coverage across Porsche model lines and continues to expand its range for long-term vehicle support.
Benefits Include
- Restored cooling efficiency and consistent engine temperature control
- Reduced risk of overheating and related engine damage
- Improved longevity through corrosion-resistant materials and quality joins
Why Water / Coolant Radiators Wear and Fail
- Corrosion and internal scale from old or contaminated coolant
- Leaks from cracked tanks, damaged cores or failed seals and joints
- Blockages caused by debris, oil contamination or coolant breakdown products
- Physical damage from road debris or impact
The Importance of Replacing with OEMatch Water / Coolant Radiators
A compromised radiator reduces cooling capacity and raises the risk of overheating, which can lead to costly engine repairs and degraded performance. Choosing a replacement designed for Porsche applications restores correct coolant flow and heat transfer, maintains engine operating temperature and supports reliable day-to-day use and spirited driving alike.
Advantages
- Aluminium cores and precision joins that support efficient heat exchange
- Reinforced end tanks and durable connections for leak resistance
- Manufactured to original-spec dimensions and tolerances so fitment aligns with factory mounting and cooling system routing
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified, and confirm correct hose connections, clamps and coolant specification after fitting.