The PCH001150 part number refers to a specific expansion tank overflow hose used in the engine cooling system of certain Land Rover Range Rover L322 models from 2002 to 2009. This hose plays a critical role in managing excess engine coolant and maintaining optimal thermal balance in the cooling circuit.
What Is the PCH001150 Hose?
The PCH001150 hose is the expansion tank overflow hose that connects the coolant expansion/reservoir tank to the cooling system's overflow path. When the engine warms up and internal coolant pressure rises, this hose provides a safe channel for surplus coolant from the expansion tank back into the overflow system or radiator area, preventing coolant loss and overheating.
Vehicle Compatibility
This OE hose is typically fitted on:
- Land Rover Range Rover L322 (2002–2009) – Diesel 3.0 Td6
- Land Rover Range Rover L322 (2002–2009) – Petrol 4.4 V8 engines
- Compatibility should always be confirmed against the vehicle's VIN and engine type.
| OE Number | Part Name | Function | Fitment | Applicable Models | Notes |
|---|---|---|---|---|---|
| PCH001150 | Expansion Tank Overflow Hose | Engine coolant overflow routing hose | Cooling system | Land Rover Range Rover L322 3.0 D, 4.4 V8 | OE Replacement Hose |
Why This Hose Matters in the Cooling System
Engine Temperature Management
The cooling system must safely handle changes in temperature and pressure as the engine warms up and cools down. The expansion tank overflow hose helps prevent overpressure situations by routing excess coolant flow back into the proper path.
Coolant Recovery and System Integrity
By facilitating coolant return and overflow control, the PCH001150 hose helps maintain system integrity and prevents coolant loss that could lead to overheating or engine damage.
FAQ
Q: What does the PCH001150 hose do?
A: It is the expansion tank overflow hose in the Land Rover cooling system, routing excess coolant from the expansion tank back into the overflow system or radiator area to maintain proper coolant levels.
Q: Which vehicles use the PCH001150 hose?
A: It is used on Land Rover Range Rover L322 models from 2002 to 2009, including both 3.0 diesel and 4.4 V8 petrol versions.
Q: Is PCH001150 OE or aftermarket?
A: The part number PCH001150 is an OE reference. Replacement hoses are available from OE suppliers and aftermarket brands built to fit the original specification.
Q: Can I install this hose myself?
A: Installation requires basic cooling system knowledge. Ensure the cooling system is depressurized and cool before replacement, and always confirm fitment with VIN and model year.
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