1. It is Cummins 6CT8.3 engine valve seat 2. It is used with 6CT8 engine valve 3. One ... belt, belt tensioner, water pump, lubricating oil pump, engine valve seat, engine valve oil seal, engine valve guide, fuel transfer pump ... COMPANYPISTON RINGCONNECTING ROD BEARINGBELT TENSIONER Cummins 6CT8.3 Engine Valve Seat 3908830 &3928174