Fleece Performance

Replacement NSBU connector set with 6" pigtail for 2001-2004 GM trucks equipped with Allison Transmission. Includes heat-sealable butt-style connectors. Produced in-house, our manufacturing process...

Replacement connector and 6" pigtail for the fuel injector wiring harness connector where it mates to the rocker box wiring harness on MY 2003-2005 5.9L Cummins equipped Ram trucks.  Includes...

Improved casting. This isn’t your run of the mill, rinse and repeat OE casting.  Engineered from the ground up with years of testing and development - our higher tensile strength alloy castings...

Improved casting. This isn’t your run of the mill, rinse and repeat OE casting.  Engineered from the ground up with years of testing and development - our higher tensile strength alloy castings...

Replacement NSBU connector and 6" pigtail for 2004.5-2005 GM trucks equipped with Allison Transmission. Includes heat-sealable butt-style connectors. Produced in-house, our manufacturing process...

Replacing the cylinder head on a 2007.5-2018 6.7L Cummins? Our top-end gasket set has everything you need to complete a proper reseal. Kit includes the following components: OE Ref: 4932210,...

6.7L Cummins owners: Our add-on cold weather kit for the Fleece Performance intake and grid heater kit provides proven engine startability down to -35° centigrade! Optimized heater design and...