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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  Cummins Front Crank Seal & Wear Sleeve Install Tool (3.9L / 5.9L / 6.7L) - 3824498

  Stop fighting front crank seal leaks and install it RIGHT the first time. The Cummins Front Crank Seal & Wear Sleeve Install Tool Kit is engineered for precision installation of crankshaft seals and wear sleeves on 3.9L, 5.9L, and 6.7L Cummins...

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  Now: $79.95

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  Colt Cams 4BT Tappet Set TAPPETS-4BT For 3.9L Cummins 4BT (set of 8)

  Colt Cams 4BT Tappet Set TAPPETS-4BT For 3.9L Cummins 4BT The Colt Cams 4BT Tappet Set is a great upgrade for the valvetrain in your 3.9L Cummins 4BT when adding a performance camshaft. Inconsistencies such as flat and even dished crowns on the tappets...

  MSRP:

  Was:

  Now: $110.00

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