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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5.9L Cummins CP3K Fleece Performance
Regular price $1,449.00 USDSale price $1,449.00 USD Regular priceUnit price / per$1,499.00 USDSale -
Under Bed Fuel Filter Assembly for 19-24 Ram 2500-3500 with Cummins Fleece Performance
Regular price $299.00 USDSale price $299.00 USD Regular priceUnit price / per$313.95 USDSale -
Heater Core Replacement Hose and Fitting for 2003-2024 RAM Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
CP3 for LBZ/LMM Duramax Fleece Performance
Regular price $1,379.00 USDSale price $1,379.00 USD Regular priceUnit price / per$1,447.95 USDSale -
3/8 Inch Quick Connect to 3/4 Inch-16 O-ring (-8 AN) Fleece Performance
Regular price $14.99 USDSale price $14.99 USD Regular priceUnit price / per$15.99 USDSale -
Freedom Series 15W-50 Racing Oil (1 Quart) Fleece Performance
Regular price $14.99 USDSale price $14.99 USD Regular priceUnit price / per$15.99 USDSale -
Universal Pre-Formed 5/8 Inch Coolant Hose with 90 Degree Ends and T-fitting (1 Inch ID on the T) Fleece Performance
Regular price $32.23 USDSale price $32.23 USD Regular priceUnit price / per$33.84 USDSale -
Remote Turbo Oil Feed Line Kit for 2001-2016 Duramax with 1/4 NPT Turbo Oil Inlet (s300/s400) 2001-2016 GM 2500/3500 Fleece Performance
Regular price $99.99 USDSale price $99.99 USD Regular priceUnit price / per$104.99 USDSale -
12mm Quick Connect to 3/4 Inch-16 O-ring (-8 AN) Fleece Performance
Regular price $15.99 USDSale price $15.99 USD Regular priceUnit price / per$16.99 USDSale -
Replacement Thermostat Housing with Auxiliary Port RAM with 5.9L and 6.7L Cummins Fleece Performance
Regular price $129.99 USDSale price $129.99 USD Regular priceUnit price / per$136.49 USDSale -
24V Cummins Stage 2 Pushrods, 0.375 inch dia Fleece Performance
Regular price $400.14 USDSale price $400.14 USD Regular priceUnit price / per$421.20 USDSale -
2010 Dodge PowerFlo In-tank Lift Pump Assembly Fleece Performance
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per$829.00 USDSale -
Cold Weather Upgrade Kit for the Fleece Performance Intake Fleece Performance
Regular price $109.99 USDSale price $109.99 USD Regular priceUnit price / per$115.49 USDSale -
Heater Feed and Return Hose Kit for 2003-2012 Cummins Fleece Performance
Regular price $99.99 USDSale price $99.99 USD Regular priceUnit price / per$104.99 USDSale -
Fleece Performance Cummins Cylinder Head Dowels Fleece Performance
Regular price $20.99 USDSale price $20.99 USD Regular priceUnit price / per$22.04 USDSale -
OE Replacement Head Gasket for 6.7L Cummins (Standard Thickness) Fleece Performance
Regular price $119.99 USDSale price $119.99 USD Regular priceUnit price / per$125.99 USDSale -
2011-2016 GM LML Duramax (Long Bed) PowerFlo Lift Pump Assembly Fleece Performance
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per$829.00 USDSale -
Universal Pre-Formed 5/8 Inch Coolant Hose with 90 Degree Ends Fleece Performance
Regular price $24.28 USDSale price $24.28 USD Regular priceUnit price / per$25.49 USDSale -
Billet Aluminum Fan Drive Pulley Black Anodized Finish Fleece Performance
Regular price $91.19 USDSale price $91.19 USD Regular priceUnit price / per$95.99 USDSale -
Freedom Series Break-In Oil (1 Quart) Fleece Performance
Regular price $13.39 USDSale price $13.39 USD Regular priceUnit price / per$14.39 USDSale -
Freedom Series 10W-30 Diesel Engine Oil (Case - 12 Quarts) Fleece Performance
Regular price $176.28 USDSale price $176.28 USD Regular priceUnit price / per$188.09 USDSale -
11-24 Dodge 2500/3500 Cummins PowerFlo In-tank Lift Pump Assembly Fleece Performance
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per$829.00 USDSale -
2003-2018 Cummins Upper Fan Pulley Idler Black Finish Contract Cut Fleece Performance
Regular price $113.99 USDSale price $113.99 USD Regular priceUnit price / per$119.99 USDSale -
Turbocharger Installation Kit for 2019-2024 6.7L Cummins VGT Turbochargers Fleece Performance
Regular price $79.99 USDSale price $79.99 USD Regular priceUnit price / per$83.99 USDSale -
Fuel System Upgrade Kit with PowerFlo Lift Pump for 03-04 Dodge Cummins Fleece Performance
Regular price $1,099.00 USDSale price $1,099.00 USD Regular priceUnit price / per$1,129.00 USDSale -
2007.5-2018 Cummins Regulated Return Fuel Distribution Block Fleece Performance
Regular price $618.10 USDSale price $618.10 USD Regular priceUnit price / per$649.00 USDSale -
Replacement Coolant Bypass Hose for 2019-Present Ram with 6.7L Cummins Fleece Performance
Regular price $84.99 USDSale price $84.99 USD Regular priceUnit price / per$89.24 USDSale -
Transmission Heat Exchanger Bypass Plug Kit
Regular price $13.99 USDSale price $13.99 USD Regular priceUnit price / per$14.69 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!












