STC4378 | Engine Coolant Pump - 4.0 & 4.6 V8 | Defender, Discovery, Range Rover P38
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: STC4378 - Engine Coolant Pump
STC4378 is an engine coolant pump fitted to the engine cooling system on 4.0 and 4.6 V8 engines. It circulates coolant through the cylinder block, cylinder heads and radiator to transfer heat away from the combustion chambers and help control engine temperature. The assembly includes the pump housing and impeller interface required to connect to the cooling passages and accessory drive; replace the gasket when fitting to maintain a sealed coolant circuit. For vehicles with a long service history or visible coolant leakage, inspect adjacent hoses and the drive belt during replacement. Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Defender (1987-2006) - 4.0 V8
- Discovery 1 (1989-1998) - V8 EFI (From VIN FA393361 to VIN WA799999)
- Discovery 2 (1998-2004) - V8 (From VIN XA903550 to VIN XA907212; From VIN XA207841 to VIN XA231750)
- Range Rover P38 - V8 (From VIN XA417383 to VIN XA426593)
Frequently Asked Questions
The STC4378 pump circulates coolant around the engine cooling circuit on 4.0 and 4.6 V8 engines, moving fluid through the block, cylinder heads and radiator to regulate operating temperature. The part supplied includes the pump housing and impeller interface for connection to the cooling passages and accessory drive. When fitting, replace the gasket to maintain a sealed coolant circuit and inspect adjacent hoses and the drive belt if the vehicle has a long service history or visible coolant leakage.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | 4.0 V8 |
| Land Rover Discovery 1 (1989-1998) | V8 EFI (From VIN FA393361 to VIN WA799999) |
| Land Rover Discovery 2 (1998-2004) | V8 (From VIN XA903550 to VIN XA907212; From VIN XA207841 to VIN XA231750) |
| Land Rover Range Rover P38 | V8 (From VIN XA417383 to VIN XA426593) |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
- C8 products are usually supplied by Britpart.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.