This is the double diaphragm brake booster as used in ABS Defenders, OR with the PowerBOOST kit we supply that allows this booster to be fitted to a non-ABS Defender
TRW Brake Booster / Servo unit was found on all Land Rover Defender TD5 and Puma models from 1999 onwards with ABS Brakes. Part Number SJG100240 / SJG100240G. Brand is TRW. This is a quality OEM (Original Equipment Manufacturer) Brake Booster / Servo unit made in Spain.