3.9L CUMMINS 4BT

Built for durability and compact power, the Cummins 3.9L 4BT engine benefits from this range of mechanical fuel system upgrades, custom turbo kits, and performance manifolds. Whether it's for a Jeep swap, off-road rig, or marine build, these components support VE and P-pump variants with parts like governor spring kits, billet valve covers, and 4BT-specific intercoolers.

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  Swag Performance 5.9L/6.7L Dodge Cummins Front Crankshaft Seal Installation Tool

  Swag Performance 5.9L/6.7L Dodge Cummins Front Crankshaft Seal Installation Tool 1989 – Current 5.9L, 6.7L, and 3.9L Dodge Cummins Diesel Front Crankshaft Seal Install ToolCummins # 3824498

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  Now: $139.00

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