Collection: Fleece Performance Engineering
Fleece Performance – Premium Diesel Performance Parts & Upgrades
Fleece Performance is a pioneer in the diesel performance industry, offering high-quality, innovative parts designed to enhance power, efficiency, and reliability. Whether you own a Cummins, Duramax, or Power Stroke engine, our products are engineered to deliver superior performance, meeting the...
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LLY Duramax High Pressure Injection Line (Number 3 and Number 6) Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
EGR Cooler Bypass Valve Pigtail for 13-22 Ram with Cummins Fleece Performance
Regular price $37.99 USDSale price $37.99 USD Regular priceUnit price / per$39.89 USDSale -
2007.5-2009 3rd Gen 6.7L Dodge/Cummins Fuel Filter Delete Fleece Performance
Regular price $79.25 USDSale price $79.25 USD Regular priceUnit price / per$83.21 USDSale -
Fuel Heater Extension Harness for 17 - 24 Cab and Chassis with Fleece Performance Fuel Heater
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
Replacement High Pressure Fuel Line for LML CP3 Conversions Fleece Performance
Regular price $179.99 USDSale price $179.99 USD Regular priceUnit price / per$188.99 USDSale -
LLY Duramax High Pressure Injection Line (Number 4 and Number 5) Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
LBZ/LMM Duramax High Pressure Injection Line Kit Fleece Performance
Regular price $569.00 USDSale price $569.00 USD Regular priceUnit price / per$597.45 USDSale -
07.5-18 6.7L Ram 2500/3500 Cummins Fuel Injection Line Set Fleece Performance
Regular price $359.99 USDSale price $359.99 USD Regular priceUnit price / per$377.99 USDSale -
LLY Duramax High Pressure Injection Line (Number 2 and Number 7) Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
LLY Duramax High Pressure Injection Line (Number 1 and Number 8) Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
1/2 Inch Black Anodized Aluminum Y Barbed Fitting (For -8 Pushlock Hose) Fleece Performance
Regular price $24.99 USDSale price $24.99 USD Regular priceUnit price / per$26.24 USDSale -
Fuel Heater and Harness for Fleece Performance 17-24 Ford Filter Bases
Regular price $189.00 USDSale price $189.00 USD Regular priceUnit price / per$198.45 USDSale -
LB7 High Pressure Injection Line (1 and 8) Fleece
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per$72.44 USDSale -
HE351VE and HE300VE/VG Turbine Shaft Speed Sensor Fleece Performance
Regular price $139.99 USDSale price $139.99 USD Regular priceUnit price / per$146.99 USDSale -
2004.5-2007 63mm FMW Ford 6.0L Cheetah Turbocharger Fleece Performance
Regular price $1,979.00 USDSale price $1,979.00 USD Regular priceUnit price / per$2,077.95 USDSale -
All Lights On for 2007-2017 Toyota Tundra Fleece Performance
Regular price $27.99 USDSale price $27.99 USD Regular priceUnit price / per$28.99 USDSale -
3/4-16 Inch O-ring to 1/8 Inch NPT adapter w/ 1/8 Inch NPT plug Fleece Performance
Regular price $19.99 USDSale price $19.99 USD Regular priceUnit price / per$20.99 USDSale -
1/2 Inch Quick Connect to 3/4 Inch-16 O-ring (-8 AN) Fleece Performance
Regular price $16.99 USDSale price $16.99 USD Regular priceUnit price / per$17.99 USDSale -
Turbocharger Oil Feed Line for 2019-2024 6.7L Ram Cummins Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
Freedom Series HD Cylinder Head for the 6.0L PowerStroke - 18mm Dowel Fleece Performance
Regular price $1,599.00 USDSale price $1,599.00 USD Regular priceUnit price / per$1,649.00 USDSale -
Fleece Performance Exhaust Manifold Stud Kit - 7mm External Hex Head Fleece Performance
Regular price $229.99 USDSale price $229.99 USD Regular priceUnit price / per$241.49 USDSale -
Fleece Performance Exhaust Manifold Stud Kit - 4mm Allen Socket Head Fleece Performance
Regular price $229.99 USDSale price $229.99 USD Regular priceUnit price / per$241.49 USDSale -
Freedom Series Duramax Cylinder Head with Cupless Injector Bore for 2001-2004 LB7 (Passenger Side) Fleece Performance
Regular price $1,199.00 USDSale price $1,199.00 USD Regular priceUnit price / per$1,249.00 USDSale -
3/8 Inch CP3 Return Fitting Fleece Performance
Regular price $15.95 USDSale price $15.95 USD Regular priceUnit price / per$16.75 USDSale -
Turbo Drain Adapter Fleece Performance
Regular price $12.95 USDSale price $12.95 USD Regular priceUnit price / per$13.60 USDSale -
-8AN Aluminum Male Weld Bung 1/2 inch Register 3/4 inch OD Fleece Performance
Regular price $6.95 USDSale price $6.95 USD Regular priceUnit price / per$7.30 USDSale -
5.9L Freedom Series Cummins Cylinder Head (Street HD) 2003-2007 Dodge 2500-3500 Cummins Fleece Performance
Regular price $2,599.00 USDSale price $2,599.00 USD Regular priceUnit price / per$2,699.00 USDSale -
1998.5-2002 Dodge Cummins Auxiliary Fuel Filter Kit Fleece Performance
Regular price $299.00 USDSale price $299.00 USD Regular priceUnit price / per$313.95 USDSale
Unleash the Power of Diesel Trucks with Fleece Performance Engineering!
Discover the pinnacle of diesel performance with Fleece Performance Engineering's cutting-edge parts. Experience unrivaled power, efficiency, and excellence as you take your truck to new heights of performance. Our precision-engineered products ensure seamless integration, making every ride a seamless joy. Say goodbye to average and embrace extraordinary acceleration, towing prowess, and fuel efficiency.
Join the league of truck owners who dominate the road and conquer tough terrains effortlessly. Fueled by our commitment to excellence and innovation, Fleece Performance Engineering offers you a lasting partnership for all your diesel needs.
Upgrade your diesel truck today and embrace a new era of diesel dominance. Order your Fleece Performance Engineering products now and unleash the true potential of your truck!













