RTC4734S | Standard Piston Assembly - 2.5 Petrol | Defender 90/110 - 1987-2006
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: RTC4734S - Standard Piston Assembly - 2.5 Petrol
RTC4734S is a standard piston assembly for the 2.5 Petrol engine. The assembly includes piston, rings, gudgeon pin and circlip. The piston transfers combustion forces to the connecting rod via the gudgeon pin, while the rings provide the combustion seal and control oil on the cylinder wall; the circlips retain the pin in the piston boss. As a standard-size piston this assembly is specified for engines with an unbored cylinder block - match the piston to the correct bore and confirm ring end gaps during an engine rebuild or when replacing a damaged piston to maintain compression and manage oil consumption.
Compatibility
- Defender 90/110 (1987-2006) - 2.5 Petrol
Frequently Asked Questions
The RTC4734S piston assembly transmits combustion pressure into reciprocating motion by linking the piston to the connecting rod via the gudgeon pin. Piston rings provide the combustion seal and control oil on the cylinder wall, while circlips retain the gudgeon pin in the piston boss. It is supplied as a standard-size piston for engines with an unbored block and requires correct bore matching and ring end-gap checks during installation.
| Model | Variant |
|---|---|
| Land Rover Defender 90/110 (1987-2006) | Piston, Connecting Rod & Bearings (2.5L 4 Cyl L/R Petrol) |
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.
Replace the piston assembly during an engine rebuild or if the piston is damaged or excessively worn. During replacement, ensure the piston matches the cylinder bore and confirm correct ring end gaps to maintain compression and control oil consumption.
- C8 products are usually supplied by Britpart.
- L8 products are genuine Land Rover parts.
All products and accessories available on LRDirect.com come with a 2-year warranty.