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.

• 

  Swag Performance 4BT Main Stud Kit* 4BT Cummins 3.9L

  Swag Performance 4BT Main Stud Kit* 4BT Cummins 3.9L 4 Cylinder  Please consult with Cummins for Engine Installation & Torque Specs *THESE ARE MAIN STUDS NOT CYLINDER HEAD STUDS! Similar to ARP 247-5404/ARP2000

  MSRP:

  Was:

  Now: $169.99

  Add to Cart The item has been added