Coolant pipe, return. Porsche 955 Cayenne S / Turbo

Coolant pipe return.
The coolant hose / return tube is a high-quality replacement part for older-generation Porsche Cayenne models (typically 2003–2006, V8 and Turbo variants) where this hose is used in the engine’s cooling / oil-cooler circuit. 

Fits:
Porsche 955 Cayenne S 4.5L 2003 - 2006
Porsche 955 Cayenne Turbo 4.5L 2003 - 2006

Diagram ref no 14

Manufactured to match the original specifications, It comes complete with the correct hose shape and necessary clamps, ensuring that coolant flow from the oil cooler return or relevant coolant circuit remains sealed and leak-free.

This replacement hose is ideal when the original hose shows signs of aging - such as hardening, cracking, swelling, leaks, or if the original has been removed during maintenance - thereby ensuring reliable coolant circulation and preventing coolant leaks that could lead to engine overheating or oil-cooler failure.

• Position: Engine coolant / oil cooler return circuit, connecting oil-cooler / coolant exchanger to return lines - ensures proper coolant flow.

• Function: Carries coolant (or coolant/oil-cooler return fluid) under pressure/return - maintains cooling system integrity and prevents leaks or coolant loss.

Coolant hoses are subject to constant heat, pressure cycles, coolant chemistry, and under-hood vibration. Over time these factors cause rubber and hose materials to degrade - leading to swelling, cracking, soft spots or internal collapse. A compromised coolant hose may leak coolant, reduce coolant flow or fail under pressure, risking engine overheating, loss of oil-cooler efficiency, or coolant/oil contamination. By replacing an aging or damaged hose with a correctly spec’d OE-Match 94810605001 unit, you restore the cooling circuit’s reliability, prevent leaks, and ensure stable engine temperature regulation — crucial for engine longevity and safe operation.

When to Replace (common triggers):
• Hose shows visible cracks, swelling, brittleness or soft spots.
• Evidence of coolant leakage around hose joins or clamps.
• Overheating, coolant loss or coolant system warning without visible radiator or head-gasket issues.
• During cooling-system maintenance, oil-cooler service or thermostat/water-pump replacement - when original hose is removed or disturbed.
• Preventative maintenance on high-mileage vehicles, especially if original hose is over 10–15 years old.

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Related, superseded, cross reference or alternative numbers for comparison.

94810605001

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