Engine Cooling

CSF High-Performance All-Aluminum Radiator Kit for Porsche 955 Cayenne V8

The CSF High-Performance All-Aluminum Radiator Kit is engineered to improve cooling efficiency and thermal stability on both high-performance street cars and track-focused builds. Designed as a direct-fit upgrade over the factory radiator, this all-aluminum cooling solution by CSF delivers superior heat rejection, increased core capacity and enhanced durability for spirited driving, autocross, track days and everyday reliability.

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>>  

At Design911, we supply premium radiators selected for optimal fitment, performance gains and long-term reliability, making this CSF radiator kit an ideal choice for Porsche Cayenne owners seeking cooler operating temperatures and reduced heat soak under demanding conditions.

This makes it an ideal upgrade for ageing cooling systems or for drivers who want improved cooling performance and long-term reliability.

Kit Contents

• Centre radiator
• Radiator hoses
• Hose clips

Construction
•  2-Row – 42mm Ultra-High-Performance Core
•  Cooling tubes with CSF’s Exclusive B-Tube Technology
•  New 5mm tall ultra efficient fins with a multi-louvered design for maximum surface area contact
•  CNC machined mounting brackets and OEM style inlet/outlet
•  100% All Aluminium TIG-Welded construction
•  Hand brushed satin finish
•  True Plug-and-Play “Drop-in Fit”
•  Installation requires absolutely no modifications
•  Individually leak and pressure
•  Tested 2-Year Limited Warranty

What Does the CSF High-Performance Radiator Kit Do?

The CSF High-Performance All-Aluminum Radiator Kit for the Porsche Cayenne improves cooling performance by:

• Increasing heat rejection through a larger all-aluminum core
• Reducing engine operating temperatures under high load
• Providing enhanced thermal stability for extended track sessions
• Direct factory fit with no modification required
• Improving overall engine efficiency and reliability

Unlike conventional radiators with mixed materials and smaller cores, CSF’s all-aluminum design maximises airflow and coolant circulation to keep temperatures in check when it matters most.

Why Choose a CSF High-Performance Radiator Kit?

CSF radiators are engineered for performance vehicles where cooling efficiency is crucial. Key benefits include:

• All-aluminum construction for superior durability and thermal transfer
• OEM-quality fitment designed specifically for 955 Cayenne chassis
• Improved resistance to vibration and heat cycling
• Enhanced performance on street and race environments
• Trusted engineering from a leading cooling systems manufacturer

At Design911, our CSF radiator kits are selected for their exacting standards, ensuring a performance-minded upgrade that meets Porsche engine cooling demands.

When Should You Upgrade to a High-Performance Radiator?

This radiator kit is ideal when:

• Experiencing heat soak during repeated hard driving or hot weather
• Seeking improved cooling capacity for tuned or modified engines
• Replacing a worn or damaged factory radiator
• Wanting real thermal improvements without sacrificing reliability

Upgrading to a CSF high-performance radiator helps maintain consistent engine temperatures, reduce stress on cooling components and support overall performance longevity.

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

7227KIT.1

The product you are viewing cross references to these numbers

Coolant hose kit for radiators
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

Radiator water / coolant and pipe kit
This complete cooling system kit includes a direct-fit MAHLE radiator along with both primary coolant hoses. Designed to work together as a matched set, the kit ensures reliable engine cooling and long-term durability. By replacing the radiator and hoses at the same time, you eliminate weak links in the system and restore the cooling circuit to factory performance.

Fits:
Porsche Cayenne S 4.5L V8 2003-06
Porsche Cayenne Turbo 4.5L 2003-06
Porsche Cayenne Turbo S 4.5L 2006>>

What the Products Do

• Radiator: Transfers heat from the coolant to outside air, keeping engine temperatures in the safe operating range.
  
• Coolant Hoses: Carry coolant between the radiator and engine, maintaining circulation under pressure and high heat.

Together, they form the backbone of the engine’s cooling system.

Symptoms of Failure

• Rising engine temperature or overheating
• Coolant leaks from the radiator or hoses
• Bulging, cracked, or soft hoses
• Coolant smell in or around the vehicle
• Low coolant levels or frequent top-ups
• Visible corrosion, cracks, or staining around the radiator core or end tanks

Common Reasons for Failure

• Age & Wear: Plastic radiator tanks and rubber hoses degrade over time due to heat cycles and pressure.
  
• Coolant Quality: Old or incorrect coolant accelerates corrosion and hose breakdown.
  
• Contamination: Oil or debris in the cooling system can weaken rubber hoses.
  
• Vibration & Pressure: Constant stress causes cracks, leaks, or weak points to form.

Why Replace Together?
Replacing only the radiator or just the hoses can leave old components under new stress, often causing premature failure.
By installing a complete kit:

• You restore full cooling efficiency.
• You reduce the risk of breakdowns and costly engine damage.
• You save on labour costs compared to doing each part separately.
• You gain peace of mind knowing your cooling system is refreshed and reliable.

 Ideal For: Preventive maintenance, resolving overheating issues, or as a long-term solution when refreshing the vehicle’s cooling system.

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

RADKIT955T.MAH

The product you are viewing cross references to these numbers

Radiator water / coolant and pipe kit
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

Cayenne 4.5L S & Turbo's suffer from slip plastic water pipes, due to over heating, this new Water Cooling System Upgrade with alloy pipes will replace the older plastic design.

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

Cayenne 4.5L S & Turbo's suffer from split plastic water pipes, due to over heating, this new Water Cooling System Upgrade with alloy pipes will replace the older plastic design.

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

Complete Water Pump Kit – Water Pump, Thermostat, Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water pump, thermostat, drive (serpentine) belt and the required gaskets for both the pump and thermostat housing.

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>>

Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.

The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.

Kit Includes
Water pump and gasket
Thermostat
Thermostat housing gasket x 2
Inlet manifold gasket x 2

What This Complete Water Pump Kit Does

This cooling system service kit:

• Replaces the water pump to restore proper coolant flow
  
• Includes a new thermostat for accurate temperature control
  
• Supplies a fresh serpentine belt to ensure reliable accessory drive operation
  
• Comes with all required gaskets to prevent leaks during installation
  
• Improves cooling efficiency, reducing the risk of overheating
  
• Ensures long-term reliability with coordinated component replacement
  
• Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.

Why Water Pumps, Thermostats & Belts Fail

Common failure points include:

• Bearing wear inside the water pump, causing leaks or noise
  
• Impeller degradation, reducing coolant flow
  
• Thermostat sticking, leading to overheating or overcooling
  
• Serpentine belt cracking, glazing or stretching
  
• Coolant contamination, accelerating component wear
  
• Heat cycling, which weakens gaskets and housings
  
  

Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.

Why These Components Should Be Replaced Together

Replacing the pump, thermostat and serpentine belt as a set ensures:

• Restored cooling performance across the entire system
• Correct belt tension and accessory drive function
• Reduced labour costs by avoiding repeat disassembly
• Balanced longevity, as all components age similarly
  
• Prevention of leaks, thanks to new gaskets and seals
  
• Peace of mind for daily driving, long trips or track use

This kit offers the most reliable and cost-effective approach to cooling system maintenance.

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

WATERPUMP.955.3.GEB

The product you are viewing cross references to these numbers

Complete Water Pump Kit – Water Pump, Thermostat, Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water pump, thermostat, drive (serpentine) belt and the required gaskets for both the pump and thermostat housing.

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>>

Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.

The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.

Kit Includes
Water pump and gasket
Thermostat
Thermostat housing gasket x 2
Inlet manifold gasket x 2

What This Complete Water Pump Kit Does

This cooling system service kit:

• Replaces the water pump to restore proper coolant flow
  
• Includes a new thermostat for accurate temperature control
  
• Supplies a fresh serpentine belt to ensure reliable accessory drive operation
  
• Comes with all required gaskets to prevent leaks during installation
  
• Improves cooling efficiency, reducing the risk of overheating
  
• Ensures long-term reliability with coordinated component replacement
  
• Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.

Why Water Pumps, Thermostats & Belts Fail

Common failure points include:

• Bearing wear inside the water pump, causing leaks or noise
  
• Impeller degradation, reducing coolant flow
  
• Thermostat sticking, leading to overheating or overcooling
  
• Serpentine belt cracking, glazing or stretching
  
• Coolant contamination, accelerating component wear
  
• Heat cycling, which weakens gaskets and housings
  
  

Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.

Why These Components Should Be Replaced Together

Replacing the pump, thermostat and serpentine belt as a set ensures:

• Restored cooling performance across the entire system
• Correct belt tension and accessory drive function
• Reduced labour costs by avoiding repeat disassembly
• Balanced longevity, as all components age similarly
  
• Prevention of leaks, thanks to new gaskets and seals
  
• Peace of mind for daily driving, long trips or track use

This kit offers the most reliable and cost-effective approach to cooling system maintenance.

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

WATERPUMP.955.3.MEY

The product you are viewing cross references to these numbers

Complete Water Pump Kit – Water Pump, Thermostat, Serpentine Belt & Gaskets for a Full Cooling System Refresh
This complete water pump kit includes a new water pump, thermostat, drive (serpentine) belt and the required gaskets for both the pump and thermostat housing.

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>>

Designed as a comprehensive cooling system service package, it ensures correct coolant circulation, accurate temperature regulation, and reliable accessory belt operation. Ideal for preventative maintenance or full cooling system repair, this kit provides everything needed to restore confidence in your Porsche’s engine cooling performance.

The water pump continuously circulates coolant through the engine and radiators, while the thermostat regulates operating temperature and ensures the engine warms up properly. The serpentine belt drives essential accessories—including the water pump—so replacing all these components together ensures long-term reliability and prevents future breakdowns.

Kit Includes
Water pump and gasket
Thermostat
Thermostat housing gasket x 2
Inlet manifold gasket x 2

What This Complete Water Pump Kit Does

This cooling system service kit:

• Replaces the water pump to restore proper coolant flow
  
• Includes a new thermostat for accurate temperature control
  
• Supplies a fresh serpentine belt to ensure reliable accessory drive operation
  
• Comes with all required gaskets to prevent leaks during installation
  
• Improves cooling efficiency, reducing the risk of overheating
  
• Ensures long-term reliability with coordinated component replacement
  
• Perfect for workshop servicing, DIY maintenance or high-mileage cooling system refreshes.

Why Water Pumps, Thermostats & Belts Fail

Common failure points include:

• Bearing wear inside the water pump, causing leaks or noise
  
• Impeller degradation, reducing coolant flow
  
• Thermostat sticking, leading to overheating or overcooling
  
• Serpentine belt cracking, glazing or stretching
  
• Coolant contamination, accelerating component wear
  
• Heat cycling, which weakens gaskets and housings
  
  

Cooling failures can cause warped cylinder heads, engine misfires or complete engine failure if not addressed promptly.

Why These Components Should Be Replaced Together

Replacing the pump, thermostat and serpentine belt as a set ensures:

• Restored cooling performance across the entire system
• Correct belt tension and accessory drive function
• Reduced labour costs by avoiding repeat disassembly
• Balanced longevity, as all components age similarly
  
• Prevention of leaks, thanks to new gaskets and seals
  
• Peace of mind for daily driving, long trips or track use

This kit offers the most reliable and cost-effective approach to cooling system maintenance.

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

WATERPUMP.955.3.OEM

The product you are viewing cross references to these numbers

Water tank reservoir with cap and anti freeze 5Ltrs. 

Fits:
Porsche 955 Cayenne 3.2L 2003-06 (D9J Engines)
Porsche 955 Cayenne 4.5L S / Turbo 2003-06 (T90 / T91 Engines)

Porsche 957 Cayenne 3.6L 2007-10
Porsche 957 Cayenne 3.0L DIESEL 2007-10

Click 'Zoom in' for large parts diagram.
Diagram ref no. 1

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

95510614723

The product you are viewing cross references to these numbers