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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2003-2012 Cummins Cooling Fan Pigtail Fleece Performance
Regular price $59.99 USDSale price $59.99 USD Regular priceUnit price / per$62.99 USDSale -
ECM Connector Repair Kit for Cummins CM2350/2450 - 96 Pin (Blue) Fleece Performance
Regular price $189.00 USDSale price $189.00 USD Regular priceUnit price / per$198.45 USDSale -
Under Bed Fuel Filter Assembly for 17-26 Ford F250-550 Fleece Performance
Regular price $379.00 USDSale price $379.00 USD Regular priceUnit price / per$397.95 USDSale -
Heated Seat Module Connector Pigtail Fleece Performance
Regular price $56.99 USDSale price $56.99 USD Regular priceUnit price / per$59.84 USDSale -
Starter Solenoid Pigtail for 2003-2018 RAM Cummins Fleece Performance
Regular price $35.99 USDSale price $35.99 USD Regular priceUnit price / per$37.79 USDSale -
Cooling Fan Extension Harness for 19-24 Ram with Cummins Fleece Performance
Regular price $48.99 USDSale price $48.99 USD Regular priceUnit price / per$51.44 USDSale -
Cummins 5.9L MAP Sensor 6 Inch Pigtail Fleece Performance
Regular price $21.99 USDSale price $21.99 USD Regular priceUnit price / per$23.09 USDSale -
2003-2010 Duramax Oil Pressure Sensor Pigtail
Regular price $21.99 USDSale price $21.99 USD Regular priceUnit price / per$23.09 USDSale -
Cummins Crankcase Pressure Sensor Pigtail Fleece Performance
Regular price $25.99 USDSale price $25.99 USD Regular priceUnit price / per$27.29 USDSale -
Intake Air Temperature Sensor Extension Harness for 13-18 Dodge Ram 6.7L Cummins Fleece
Regular price $29.99 USDSale price $29.99 USD Regular priceUnit price / per$31.49 USDSale -
Valve Cover Injector Pigtail (4-pin) for 2003-2005 RAM with Cummins Fleece Performance
Regular price $29.99 USDSale price $29.99 USD Regular priceUnit price / per$31.49 USDSale -
Service Kit for FPE-FMC-FF-RLK-1116 Fleece Performance
Regular price $9.99 USDSale price $9.99 USD Regular priceUnit price / per$10.49 USDSale -
ECM Connector Repair Kit for Cummins CM2350/2450 - 96 Pin (Gray) Fleece Performance
Regular price $189.00 USDSale price $189.00 USD Regular priceUnit price / per$198.45 USDSale -
Molded Rubber Universal Elbow for 5 Inch Intakes Fleece Performance
Regular price $84.99 USDSale price $84.99 USD Regular priceUnit price / per$89.24 USDSale -
LBZ/LMM Duramax High Pressure Injection Line (Number 2 and Number 7) Fleece Performance
Regular price $79.99 USDSale price $79.99 USD Regular priceUnit price / per$83.99 USDSale -
MY 2002 Cummins MAP Sensor Adapter Harness
Regular price $59.95 USDSale price $59.95 USD Regular priceUnit price / per$62.95 USDSale -
LB7 High Pressure Injection Line (3 and 6) For 01-04 Duramax LB7 Fleece
Regular price $68.99 USDSale price $68.99 USD Regular priceUnit price / per$72.44 USDSale -
Cooling Fan Adapter Harness for 11-18 6.7L Powerstroke Fleece Performance
Regular price $49.99 USDSale price $49.99 USD Regular priceUnit price / per$52.49 USDSale -
Duramax Turbo Thermostat Delete Plug Fleece Performance
Regular price $37.95 USDSale price $37.95 USD Regular priceUnit price / per$39.85 USDSale -
07.5-18 6.7L Dodge Cummins Number 1 Injection Line Fleece Performance
Regular price $62.99 USDSale price $62.99 USD Regular priceUnit price / per$65.99 USDSale -
Molded Plastic Universal 5 Inch Intake Manifold Elbow Fleece Performance
Regular price $93.99 USDSale price $93.99 USD Regular priceUnit price / per$98.69 USDSale -
Cummins Temperature Sensor Pigtail 2007.5-2022 Dodge 2500/3500 Fleece Performance
Regular price $26.99 USDSale price $26.99 USD Regular priceUnit price / per$28.34 USDSale -
Injector Harness Pigtail for LM2/LZ0 3.0L Duramax Fleece Performance
Regular price $49.99 USDSale price $49.99 USD Regular priceUnit price / per$52.49 USDSale -
2004.5-2010 LLY, LBZ, LMM Duramax 63mm FMW Cheetah Turbocharger STREET Fleece Performance
Regular price $2,599.00 USDSale price $2,599.00 USD Regular priceUnit price / per$2,728.95 USDSale -
Stainless Steel Universal Float Switch with Two-Pin Metripack Connector Fleece Performance
Regular price $39.99 USDSale price $39.99 USD Regular priceUnit price / per$41.99 USDSale -
Injector Return Line Repair Fitting for 17-24 6.7L Powerstroke Fleece Performance
Regular price $64.99 USDSale price $64.99 USD Regular priceUnit price / per$68.24 USDSale -
Injector Return Line Repair Fitting for 11-16 6.7L Powerstroke Fleece Performance
Regular price From $69.99 USDSale price From $69.99 USD Regular priceUnit price / per$73.49 USDSale -
07.5-18 6.7L RAM 2500/3500 Cummins Number 4 and Number 5 Injection Line Fleece Performance
Regular price $62.99 USDSale price $62.99 USD Regular priceUnit price / per$65.99 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!



















