Engines and Performance

Fleece Performance

Fleece Performance Retaining Bolt Adapter Fittings FPE-34224-B

Anodized billet aluminum adapter fitting with retaining bolt. 10AN Male to 1.325 in O ring bore.

Fleece Performance

Fleece Performance Plug Fittings FPE-TURBO-THERM

The Fleece Performance Duramax Turbo Thermostat Delete Plug is designed to eliminate the stock coolant feed line when installing a non water cooled turbocharger on your Duramax. It provides clearance for larger intake plumbing, is CNC machined from 6061...

Fleece Performance

Fleece Performance SureFlo Performance Sending Units FPE-SF-FMC-1116-LB

PROBLEM If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to install a draw straw or drill your fuel tank to accommodate a sump. Each of these has some pretty significant drawbacks including the tank issues...

Fleece Performance

Fleece Performance Coolant Bypass Kits FPE-CLNTBYPS-CUMMINS-MAN-SS

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9 6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling...

Fleece Performance

Fleece Performance Hose Barb to AN Fittings FPE-PL-45-06

Hose End Size 6 AN Fitting Style Socketless barb Fitting Angle 45 degree Adapter Size 6 AN Fitting Material Aluminum Fitting Color Black anodized

Fleece Performance

Fleece Performance Hose Barb-to-Straight Cut O-Ring Fittings FPE-34553-A

Male AN straight thread O Ring Boss ORB fitting with O ring to quick connect Short hex height to maximize install clearance

Fleece Performance

Fleece Performance Freedom Series DuraMax Cylinder Heads FPE-61-10003-P

Introducing our Freedom Series cylinder heads for the 6.6L Duramax Each cylinder head is manufactured in our state of the art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected,...

Fleece Performance

Fleece Performance Cummins S300-S400 Turbo Installation Kit (2003-2007) FPE-TURBO-INST-KIT-CUMM59

KitContents FPE CTDT KIT FPE CRTFL S3S4 Turbo Stud Kit T4 Turbo Gasket

Fleece Performance

Fleece Performance Turbo Oil Feed Lines FPE-CRTFL-S3S4

Replacement Turbo Oil Feed Line designed for use with a 1 4 in NPT inlet turbochargers. The oil feed line is intended for use with S300 or S400 turbochargers mounted in a lower position and WILL NOT work with turbochargers configured in a high mount...

Fleece Performance

Fleece Performance Valve Cover Conversion Harnesses FPE-HAR-CUMM-VC-ADPT-LATE

Convert your 2006 2018 Ram with 6 pin injector connectors to the 2003 2005 4 pin injector connectors with our plug and play conversion harness. This conversion harness is for use on a 2006 2018 Cummins where a 2003 2005 rocker box style is used. Produced...

Fleece Performance

Fleece Performance Fan Extension Harnesses FPE-HAR-CUMM-FAN-1318

Our replacement fan extension harness for the 2013 2018 Ram with 6.7L Cummins allows you to repair a broken or damaged harness without needing to replace the entire fan and clutch assembly. This harness is mounted to the fan assembly and connects to the...

Fleece Performance

Fleece Performance Turbo Drain Adapters FPE-CTDA-78HS

The Cummins turbo drain tube adapter is made from high quality 6061 aluminum and anodized black for a superior appearance. It fits into the engine block drain tube location just like the factory drain tube and allows you to route your own 7 8 in ID hose...