RTC229520 | Oversize Piston 0.020 - 3.5 V8 - Discovery, Range Rover Classic
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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: RTC229520 - Oversize Piston 0.020 - 9.35:1 with Rings - 3.5 V8
RTC229520 is an oversize piston and ring set, sized +0.020 and specified with a 9.35:1 compression ratio for 3.5 V8 Rover engines. Fitted into the cylinder after reboring, the piston transmits the force from combustion through the gudgeon pin to the connecting rod and crankshaft while the supplied rings seal the piston against the cylinder wall to control combustion gas leakage and manage oil. This part is intended for complete cylinder reconditioning where +0.020 pistons are specified; fitment requires matching piston size to connecting rod and bearing clearances and observing engine rebuild tolerances. Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 1 - 3.5 V8
- Range Rover Classic (1986-1991) - 3.5 V8
Frequently Asked Questions
RTC229520 is an oversize +0.020 piston and ring set for 3.5 V8 engines, providing a 9.35:1 compression ratio. It is fitted when cylinder bores are machined to restore bore size and roundness, allowing correct combustion chamber volume and restoring sealing with the supplied rings. The piston transmits combustion forces through the piston pin to the connecting rod and crankshaft while the rings control gas leakage and oil distribution.
| Model | Variant |
|---|---|
| Land Rover Discovery 1 | 3.5 V8 |
| Land Rover Range Rover Classic | (1986-1991) - V8 Twin Carb L/R Petrol (To HA610293) |
| Land Rover Range Rover Classic | (1986-1991) - Petrol V8 L/R EFI (To HA610293) |
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.
This piston set should be fitted during an engine rebuild where the cylinder has been machined/rebored to accept +0.020 pistons; it is not a routine service item. Ensure clearances and matching to connecting rods and bearings are checked during the rebuild and follow specified engine tolerances.
- 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.