Introduction: The ceramic fuel pump plunger tappet (portion 4088593) improves diesel engine reliability and gas delivery efficiency, making sure compatibility with Cummins ISC eight.3 and Paccar PX8 designs.
as being https://www.shilindiesel.com/blogs-detail/a-closer-look-at-fuel-injection-pump-plunger-tappet-features-and-benefits