ERR4314 | Threaded Cylinder Block Plug - V8 | Defender, Discovery, Range Rover P38
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To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: ERR4314 - Threaded Cylinder Block Plug - V8 EFI
ERR4314 is a threaded cylinder block plug fitted to the rear of the cylinder block on Rover V8 EFI engines, including later 4.6 V8 engines. It provides a sealed closure for the rear opening of the cylinder block to prevent leakage from that location.
Compatibility
- Discovery 1 (1989-1998) - 3.9/4.0 V8 EFI Petrol (From VIN FA393361 to WA799999)
- Discovery 2 (1998-2004) - V8 EFI Petrol
- Defender (1987-2006) - 4.0 V8 EFI Petrol
- Range Rover P38 (1994-2001) - 4.0 V8 EFI Petrol, 4.6 V8 EFI Petrol
Frequently Asked Questions
ERR4314 is a threaded plug that seals the rear of the cylinder block on Rover V8 EFI engines, including later 4.6 V8 variants. It closes the rear opening of the block to maintain a fluid-tight seal and should be checked for damage or leakage whenever the engine is dismantled.
| Model | Variant |
|---|---|
| Land Rover Defender (1987-2006) | 4.0 V8 EFI Petrol |
| Land Rover Range Rover P38 (1994-2001) | 4.0 V8 EFI Petrol; 4.6 V8 EFI Petrol |
| Land Rover Discovery 1 (1989-1998) | 3.9/4.0 V8 EFI Petrol (From VIN FA393361 to WA799999) |
| Land Rover Discovery 2 (1998-2004) | V8 EFI Petrol |
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 the plug whenever the engine is dismantled or during major servicing; replace it if it shows signs of corrosion, damage, or if it is leaking. If unsure, consult a workshop manual or a qualified technician for guidance.
- L8 products are genuine Land Rover parts.
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