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RTC477820 - Ring - 2.5 D Piston 020 by Allmakes Land Rover Range Rover

RTC477820 - Piston Ring – 2.5 Diesel – 0.020in Oversize

- €20,30
€20,30
€20,30 - €20,30
€20,30
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 Ring Set for the 2.5 litre four-cylinder naturally aspirated diesel engine, 0.020in oversize.

The rings seal the combustion chamber against the cylinder bore, carry heat from the piston crown out into the bore wall, and meter the oil film left behind on the liner. This oversize set is used after the block has been rebored 0.020in above standard and must be paired with pistons of the same oversize.

Supplied as the ring set for one piston - four sets are required for a complete engine. Rings must match the finished bore size.

Vehicle Model Land Rover Defender up to 2016
Fitment Notes DEFENDER 1987-2006 — 2.5L 4 Cyl Naturally Aspirated Diesel; 0.020 oversize (per piston)
Alternative Codes
RTC477820

Available to order 2–3 weeks

Not currently in stock. Order now — typically ships within 2–3 weeks.

Need it faster? Contact us about express import (2–5 business days).

When will my order arrive?

This item is ordered from our supplier on request. Typical lead time is 2–3 weeks from order confirmation.

  • Netherlands / Belgium / Germany: 2–4 working days after dispatch.
  • Other EU countries + UK: 4–8 working days after dispatch.
  • Outside EU/UK: contact us for an estimate.

Need it faster? Express import available in 2–5 business days — contact us before ordering.

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 the RTC477820 piston ring set?
The RTC477820 is a piston ring set for the 2.5L naturally aspirated diesel engine, sized 0.020 inch oversize. The rings seal the piston against the bore, controlling compression and oil, and this oversize suits a rebored block.
What does 0.020 inch oversize mean for these rings?
The 0.020 inch oversize RTC477820 is for a cylinder block rebored 0.020 inch. Match the ring size to your rebore, or they won't seal correctly. A standard bore needs standard-size rings instead.
How many ring sets do I need for the engine?
This RTC477820 covers one piston, so a four-cylinder 2.5 NA diesel needs four sets for a full rebuild. Count your cylinders and order accordingly, and check the bore is machined to 0.020 inch oversize before fitting.
Does the RTC477820 fit my Defender?
The RTC477820 fits the Defender (1987-2006) with the 2.5L four-cylinder naturally aspirated diesel engine. Confirm your engine is the 2.5 NA diesel and that the block has been rebored 0.020 inch oversize before ordering.