This piston ring set provides one complete set of three rings for a single piston, used in Land Rover's 2.5 petrol and 2.25 petrol engines. The rings seal combustion gases, regulate oil consumption, and transfer heat from the piston to the cylinder wall. Worn or broken rings typically present as excessive oil burning, blue exhaust smoke, reduced compression, and increased blow-by. Key Features Three-ring configuration per piston: compression ring, second compression ring, and oil control ring Standard bore sizing - confirm cylinder bore has not been machined oversize before ordering Dimensioned to OEM specification for the 2.5 petrol (Defender) and 2.25 petrol (Series 3) engines Sold as a single-piston set; a full engine rebuild requires one set per cylinder - four sets for a four-cylinder engine Vehicle Fitment Fits Land Rover Defender (1986–2006) with 2.5 Petrol engine and Land Rover Series 3 with 2.25 Petrol engine, standard bore applications. Not sure about fitment? Feel free to get in touch at [email protected]