RTC419040 - Piston Ring Set – 2.25L Petrol – +0.040" O/S

- €13,20

€13,20

€13,20 - €13,20

€13,20

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 2.25L 4-cylinder petrol engine, ground to +0.040" (1.0mm) oversize for use with rebored cylinder bores.

The rings seal the combustion chamber against the cylinder wall, control the oil film on the bore and conduct heat from the piston into the cylinder. Supplied as the ring set for a single piston.

Vehicle Model Land Rover Defender up to 2016
Land Rover Series 2 and 3

Fitment Notes DEFENDER 1986-2006 — 2.5L 4 Cyl Petrol (same bore as 2.25L), +0.040" (1.0mm) oversize per piston
SERIES III — 2.25L 4 Cyl Petrol, +0.040" (1.0mm) oversize per piston

Alternative Codes

RTC419040RTC241040RTC277440

In stock 8 units

7 · Gouda 1 · 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 the +0.040" piston ring set used for?

This piston ring set seals the combustion chamber and controls oil on the bore of the 2.25-litre 4-cylinder petrol engine, and also suits the 2.5-litre petrol which shares the same bore. It covers a single piston on Land Rover Series 3 and Defender.

What does the +0.040" oversize mean?

The +0.040" (1.0mm) oversize means the rings are ground 0.040 inch over standard for a cylinder rebored to that size. It's typically the largest common oversize, so it's usually used where the bores have already been machined out furthest. Don't fit it on standard bores.

How many sets do I need, and are there alternative part numbers?

You'll typically need four sets, one per piston, for the 4-cylinder petrol engine. RTC241040 and RTC277440 are listed as alternative references for this +0.040" set, so either may appear on equivalent ring sets for the same oversize.

What are the symptoms of worn piston rings?

Worn rings usually cause blue exhaust smoke, high oil use and low compression on the 2.25 and 2.5-litre petrol engines. Rings like these go in during a rebore, and this set matches a block machined to +0.040" oversize.

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