Up for sale is a high quality clutch booster assembly that fits most Isuzu NPR NKR trucks with the 4HF1 4HG1 4HJ1 engine. Push rod length is 14 cm. There is another variation of this clutch booster assembly for the same engine that has a 16 cm push rod. Please measure your push rod length before buying. It is an aftermarket replacement for part number 8-97048-928-2 or part number 810-05005.