This precision measuring instrument is designed for resetting the Timing Postion on Diesel engines with the following Fuel Pumps Bosch EPVE Rotory Kikki Nippon Denso CAV Rotodiesel Top entry These fuel pumps will be found on the following vehicles with diesel engines Alfa Romeo Audi BMW Daihatsu Fiat Ford Isuzu Iveco Lancia Land Rover Mazda Mitsubishi Nissan Renault Rover and Volkswagen