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8510109 - Piston – +0.020in O.S. – 8.13:1 Engine Part Land Rover Range Rover Defender, Discovery, Range Rover, Series

8510109 - Piston – +0.020in O.S. – 8.13:1

- €54,40
€54,40
€54,40 - €54,40
€54,40
Aftermarket Part
Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.
Piston for the 3.5L Rover V8 petrol engine, supplied at +0.020" oversize with an 8.13:1 compression ratio.

The +0.020" oversize suits a rebored block, and the 8.13:1 ratio corresponds to the low-compression version of the engine. Each piston is supplied complete with its piston rings and gudgeon pin.
Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994
Land Rover Series 2 and 3
Fitment Notes SERIES II/III — Rover V8 3.5L, +0.020" O.S., 8.13:1 compression; carburettor and EFI variants
DEFENDER 1983-2006 — Rover V8 3.5L, +0.020" O.S., 8.13:1 compression; carburettor and EFI variants
DISCOVERY 1 1989-1998 — Rover V8 3.5L, +0.020" O.S., 8.13:1 compression
RANGE ROVER CLASSIC 1970-1994 — Rover V8 3.5L, +0.020" O.S., 8.13:1 compression; carburettor and EFI variants
Alternative Codes
8510109RTC218620

In stock 16 units
16 · Gouda 0 · Drachten
Express delivery available

When will my order arrive?
  • Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
  • UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
  • Netherlands / Belgium / Germany: 2–4 working days.
  • Other EU countries + UK: 4–8 working days.
  • Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is this Piston used for?
This Piston is for the 3.5L Rover V8 petrol engine, supplied at +0.020in oversize with an 8.13:1 compression ratio. The oversize suits a block that's been rebored 0.020in, and the 8.13:1 ratio matches the low-compression V8. It fits the Series 2/3, Defender, Discovery 1 and Range Rover Classic.
How many pistons are needed for a rebuild?
The Rover V8 has eight cylinders, so a full rebuild typically needs eight matched pistons. Buy them as a set so weights and sizing are consistent across the engine, rather than mixing a single replacement with the originals.
How do I know this is the right piston for my engine?
Match both the oversize and the compression ratio to your engine. This piston is +0.020in oversize, so it only suits a block already rebored to that size, and its 8.13:1 ratio is the low-compression version, not a high-compression one. Confirm your rebore size and compression ratio before ordering.
Is there an alternative part number for this piston?
This piston also cross-references to RTC218620. If you find that number in a catalogue or on the old part, it's the same +0.020in oversize 8.13:1 piston for the 3.5L Rover V8.

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