Rocker Arm Set - 1983-1998 3.9L 4BT Dodge Cummins
Quiet the Valvetrain. Restore Lost Performance.Worn, scored rocker arms rob the 4BT of valve lift, create ticking, and accelerate wear on pushrods and valve stems. These new heavy-duty rocker arms replace your tired originals with precision-machined, heat-treated components — no cores, no waiting, no guesswork. New manufacture — no core charge or exchange required Precision-machined contact surfaces for accurate valve actuation Heat-treated for long service life under sustained load Direct fit for 1983-1998 3.9L 4BT Cummins engines Building the whole top end? See our 4BT head stud kit (Part# CP896) and connecting rod bolts (Part# CR100).