BH504161L | Hex-Headed Bolt 1/4 UNC X 2 - V8 | Defender, Discovery 1
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: BH504161L - Hex-Headed Bolt 1/4 UNC X 2
BH504161L is a hex-headed bolt with a 1/4" UNC thread and a 2" length. Fitted to cooling-system components, this bolt secures water pump fittings on 3.5L V8 Twin Carb and V8 EFI petrol engines. Commonly described as a hex bolt or 1/4-inch UNC bolt, it provides the fastening point for water-pump connections and related cooling hardware.
Compatibility
- Defender (1987-2006) - 3.5L V8 Twin Carb Petrol
- Discovery 1 (1989-1998) - 3.5L V8 Twin Carb Petrol
- Discovery 1 (1989-1998) - V8 EFI Petrol
- Range Rover Classic (1986-1991) - V8 Twin Carb Petrol
- Range Rover Classic (1986-1991) - V8 EFI Petrol
- Range Rover Classic (1992-1994) - V8 EFI Petrol
Frequently Asked Questions
BH504161L is used to fasten cooling-system components, principally water pump fittings, on 3.5L V8 Twin Carb and V8 EFI petrol engines. As a 1/4" UNC x 2" hex-headed bolt it provides the mechanical retention for pump housings and associated fittings. Ensure mating threads are clean and the bolt is engaged correctly to avoid cross-threading or stripped threads; replace the bolt if the head is rounded, threads are damaged or corrosion compromises the fit.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | Water Pump - Non Viscous (3.5L V8 Twin Carb Petrol) |
| Land Rover Defender (1987-2006) | Water Pump - Viscous (3.5L V8 Twin Carb Petrol) |
| Land Rover Range Rover Classic (1986-1991) | Coolant Pump (V8 Twin Carb Petrol) (To HA610293) |
| Land Rover Range Rover Classic (1986-1991) | Coolant Pump (V8 EFI Petrol) (To HA610293) |
| Land Rover Range Rover Classic (1992-1994) | Coolant Pump (V8 EFI Petrol) (From JA610294) |
| Land Rover Discovery 1 (1989-1998) | Coolant Pump (3.5L V8 Twin Carb Petrol) (From FA393361 to WA799999) |
| Land Rover Discovery 1 (1989-1998) | Coolant Pump (V8 EFI Petrol) (From FA393361 to WA799999) |
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.
Inspect this bolt whenever the cooling system or water pump is serviced and replace it if there is visible corrosion, damaged or stripped threads, or a rounded head preventing correct torque. If the bolt no longer tightens securely or shows signs of wear, fit a new fastener to ensure a reliable seal.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
All products and accessories available on LRDirect.com come with a 2-year warranty.