OEM part references SNB162, PRC8593, PRC2506, TT-4803/02. Suitable for Land Rover 90 & 110 1983-98 TDi & V8 (upto WA159806) plus Series Land Rovers with Ex Defender 200TDi. NOT suitable for 200Tdi Discovery engines so be careful if your Defender has been converted with a Discovery engine.