Dramatically increase the tensile strength of your rod cap bolts by installing the ARP 247-6304 bolt kit on your 4BT. Whether you’re rebuilding the engine or just looking for added security, you can never lose by installing a set of ARP fasteners in your engine.
ARP 247-6304 4BT Cummins 4-Cyl Rod Bolt Kit
$132.20
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- Fits: 4BT (3.9L) 4-cylinder Cummins engines
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