Injector pressure gauge, injector extractor, injector tip and seat milling kits are essential for mounting motor vehicle engines. Adequate pressure in the injection systems is required for the most ideal injection of the atomized fuel-air mixture injected into the engine compartment. Depending on the car type, there are several injector systems and the pumps used for them require different test systems. They can be used to prevent fuel pumps from malfunctioning without being removed. Take a look at our selection!