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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-10 to 7/8 Inch -14 Straight Male Black w/ O-Ring Fleece Performance
Regular price $14.25 USDSale price $14.25 USD Regular priceUnit price / per$14.96 USDSale -
2007.5-2010 GM Powerflo In-Tank Lift Pump Fleece Performance
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per$829.00 USDSale -
-8 to 3/4 Inch-16 Straight Male Black w/ O-Ring Fleece Performance
Regular price $9.99 USDSale price $9.99 USD Regular priceUnit price / per$10.99 USDSale -
2003-2007 Cummins Coolant Bypass Brackets Fleece Performance
Regular price $69.99 USDSale price $69.99 USD Regular priceUnit price / per$73.49 USDSale -
Freedom Series Duramax Cylinder Head for 17-23 L5P (Driver Side) Fleece Performance
Regular price $1,199.00 USDSale price $1,199.00 USD Regular priceUnit price / per$1,249.00 USDSale -
2006-2010 Factory LBZ/LMM Duramax Cylinder Head (Passenger Side) Fleece Performance
Regular price $1,199.00 USDSale price $1,199.00 USD Regular priceUnit price / per$1,249.00 USDSale -
-6 to 9/16 inch-18 Straight Male Black Fleece Performance w/ O-Ring Fleece Performance
Regular price $9.99 USDSale price $9.99 USD Regular priceUnit price / per$10.99 USDSale -
Freedom Series Duramax Cylinder Head for 17-23 L5P (Passenger Side) Fleece Performance
Regular price $1,199.00 USDSale price $1,199.00 USD Regular priceUnit price / per$1,249.00 USDSale -
Fuel Filter Adapter Fitting - M16x1.5 Fleece Performance
Regular price $15.99 USDSale price $15.99 USD Regular priceUnit price / per$16.79 USDSale -
2007.5-2009 6.7L Cummins Fuel Distribution Block Hose and Fitting Kit Fleece Performance
Regular price $160.95 USDSale price $160.95 USD Regular priceUnit price / per$169.00 USDSale -
Freedom Series 5W-40 Diesel Engine Oil (Case - 12 Quarts) Fleece Performance
Regular price $176.28 USDSale price $176.28 USD Regular priceUnit price / per$188.09 USDSale -
Freedom Series Break-In Oil (Case - 12 Quarts) Fleece Performance
Regular price $159.35 USDSale price $159.35 USD Regular priceUnit price / per$170.65 USDSale -
2004.5-2007 GM Powerflo In-Tank Lift Pump Fleece Performance
Regular price $799.00 USDSale price $799.00 USD Regular priceUnit price / per$829.00 USDSale -
All Lights On Fleece Performance
Regular price $21.95 USDSale price $21.95 USD Regular priceUnit price / per$22.95 USDSale -
2003-2007 Cummins Fuel Distribution Block Hose and Fitting Kit Fleece Performance
Regular price $160.95 USDSale price $160.95 USD Regular priceUnit price / per$169.00 USDSale -
2010-2018 Cummins Fuel Distribution Block Hose and Fitting Kit Fleece Performance
Regular price $160.95 USDSale price $160.95 USD Regular priceUnit price / per$169.00 USDSale -
Black Anodized Billet Fuel Cap For 13-18 Cummins Fleece Performance
Regular price $39.99 USDSale price $39.99 USD Regular priceUnit price / per$41.99 USDSale -
Freedom Series 5W-40 Diesel Engine Oil (1 Quart) Fleece Performance
Regular price $14.99 USDSale price $14.99 USD Regular priceUnit price / per$15.99 USDSale -
Cummins Coolant Bypass Kit 06-07 Auto Trans with Stainless Steel Braided Line Fleece Performance
Regular price $379.00 USDSale price $379.00 USD Regular priceUnit price / per$397.95 USDSale -
6.7L Freedom Series Cummins Cylinder Head (Street HD)07.5-18 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 -
Freedom Series 15W-40 Diesel Engine Oil (1 Quart) Fleece Performance
Regular price $14.99 USDSale price $14.99 USD Regular priceUnit price / per$15.99 USDSale -
2007.5-2009 3rd Gen 6.7L Dodge/Cummins Fuel Distribution Block Fleece Performance
Regular price $174.00 USDSale price $174.00 USD Regular priceUnit price / per$182.70 USDSale -
Green Anodized Billet Fuel Cap For 2013-2018 Cummins Fleece Performance
Regular price $39.99 USDSale price $39.99 USD Regular priceUnit price / per$41.99 USDSale -
6.7 Cummins Stock VGT Turbo Coolant Delete Plugs Fleece Performance
Regular price $29.95 USDSale price $29.95 USD Regular priceUnit price / per$31.45 USDSale -
Donaldson P553203 Replacement Fuel Filter Fleece Performance
Regular price $27.99 USDSale price $27.99 USD Regular priceUnit price / per$29.39 USDSale -
4AN to 3/32 Inch ID Hose Barb Fleece Performance
Regular price $18.99 USDSale price $18.99 USD Regular priceUnit price / per$19.94 USDSale -
Negative 8AN Female Swivel to 7/8-14 O-Ring Fleece Performance
Regular price $13.99 USDSale price $13.99 USD Regular priceUnit price / per$14.69 USDSale -
Freedom Series 15W-40 Diesel Engine Oil (Case - 12 Quarts) Fleece Performance
Regular price $176.28 USDSale price $176.28 USD Regular priceUnit price / per$188.09 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!











