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Porsche // Cayenne 9PA (955) 2003-2006 // 955 Cayenne S 4.5L V8 2003-06
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- Porsche 944 2.5L 8V 1982-87
This replacement coolant hose connects the upper radiator outlet to the cylinder head on early Porsche 944 models (1983-85). This hose conforms to original Porsche specifications in diameter, length, routing, and material grade. Constructed from high-temperature-resistant rubber with the correct wall thickness, it restores proper coolant flow, prevents leaks, and maintains the reliability of the vehicle's cooling system.
Fits:
Porsche 944 1983 - 1985
Engine type: 4401 / 4402 / 4403 / 4404
M 41D 1286 >>
M 41D 5165 >>
M 43D 3440 >>
M 43D 5518 >>
Diagram ref no 9A.
• Position on Vehicle: Engine bay – upper radiator hose connecting the top of the radiator to the cylinder head.
The upper radiator hose is a critical link in the engine’s cooling circuit: if it fails, you risk coolant leaks, overheating, engine damage, loss of heater performance and unexpected roadside breakdowns. Symptoms of a failing hose include bulging, cracking, coolant smell, visible coolant loss or temperature rise. Replacing the hose ensures proper coolant delivery, secure clamping, correct routing and long-term reliability.
When and why to replace:
• Visible cracks, bulging or soft spots on the existing hose.
• Hose has become hard, inflexible or distorted and may collapse under engine vacuum/pressure.
• Leaks or coolant loss are detected at the top radiator connection.
• During cooling system service: radiator removal, cylinder head service or hose age exceeds recommended lifespan (especially on classic vehicles).
• When the vehicle is undergoing restoration and you require correct-spec parts for peace of mind and authenticity.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410623902
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>>
Fits:
Porsche 955 Cayenne S - 2003 to 2006
Porsche 955 Cayenne turbo - 2003 to 2006
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510623910
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>>
Fits:
Porsche 955 Cayenne S - 2003 to 2006
Porsche 955 Cayenne turbo - 2003 to 2006
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510623800
The product you are viewing cross references to these numbers
- Porsche 955 Cayenne S 4.5L V8 2003-06
Fits:
Porsche 955 Cayenne S - 2003 to 2006
Click 'Zoom in' for large parts diagram.
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95510623950
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>>
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
This kit is comprised of the following items:
