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Rocker Arm Set - 1983-1998 3.9L 4BT Dodge Cummins
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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).
Part Number: CP204
UPC: 663647159700
INSTALL GUIDE
PACKAGE CONTENTS
VEHICLE FITMENTS
⚠️ PROP 65 WARNING
CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.