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.
Don’t reinstall the factory plastic oil squirters in your 89-02 Dodge 5.9L Cummins Diesel replace them with our HD Cummins Piston Oil Squirters. Commonly known as piston cooling nozzles, cooling...
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
Swag Performance 4BT Main Stud Kit* 4BT Cummins 3.9L 4 CylinderÂ
Please consult with Cummins for Engine Installation & Torque Specs
*THESE ARE MAIN STUDS NOT CYLINDER HEAD STUDS!
Similar to ARP...
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...
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...
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