ERR5554 | Standard High-Compression Piston - 4.6L V8 | Discovery 2, 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
To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: ERR5554 - Standard High-Compression Piston - 4.6L V8
ERR5554 is a standard high-compression piston for the 4.6L Rover V8. Fitted as part of the engine's reciprocating assembly, the piston forms the movable top of the combustion chamber and is supplied as a standard-bore item for rebuilds where cylinder bores remain within standard limits. Its high-compression crown reduces combustion chamber volume to raise the engine's compression ratio compared with a standard-compression profile. The piston carries the ring lands and grooves for piston rings to control gas blow-by and oil transfer, and the gudgeon pin bore links the piston to the connecting rod to transmit combustion forces into the crankshaft.
Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 2 (1998-2004) - 4.6 Rover V8
- Range Rover P38 - 4.6 Rover V8
Frequently Asked Questions
The ERR5554 piston forms the movable top of the combustion chamber and, as a high-compression, standard-bore piston, reduces chamber volume to increase the engine's compression ratio. It carries the ring lands and grooves for piston rings to control combustion gas blow-by and oil transfer, and its gudgeon pin bore secures the piston to the connecting rod to transmit combustion forces into the crankshaft. This part is intended for rebuilds where cylinder bores remain at standard size and a higher compression profile is required.
| Model | Variant |
|---|---|
| Land Rover Discovery 2 | (1998-2004) - 4.6 Rover V8 |
| Land Rover Range Rover P38 | 4.6 Rover V8 |
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.
- L8 products are genuine Land Rover parts.
- Z8 products are normally supplied by Allmakes.
All products and accessories available on LRDirect.com come with a 2-year warranty.