Introduction: The ceramic gas pump plunger tappet (element 4088593) improves diesel engine dependability and gasoline supply performance, making certain compatibility with Cummins ISC 8.three and Paccar PX8 types.
as https://www.shilindiesel.com/blogs-detail/a-closer-look-at-fuel-injection-pump-plunger-tappet-features-and-benefits