These VP44 Injection Pumps are manufactured using the latest OEM parts provided by the manufacturer. All worn and damaged parts are replaced with new parts and are calibrated to the latest OEM specification by certified technicians. The equipment to do this is not cheap and can only be done with test benches provided by the OEM. Each VP44 injection pump is tested for over 2.5hr each to properly calibrate for all engine circumstances. Therefore, the quality of these injection pumps will meet or exceed the standards of the OEM.
One main reason why these VP44 Injection pumps fail, is because of faulty or weak lift pumps. That being said, we do recommend replacing the lift pump whenever you replace the VP44 injection pump, as well as a warning sensor to let you know when the fuel pressure drops below a certain point. We offer a variety of pump VP44 injection pump combo deals that include a new high quality lift pump, so you can replace both at the same time. As always, we offer free advice and are happy to answer your questions about your vehicle by calling 888-372-2102.