Fleece Performance Products

Fleece Performance Products

Equipping diesel parts and accessories can get your heavy-duty diesel truck massive amounts of horsepower and torque. Fleece has just about vast selection of upgrades to get your diesel truck much needed power gains over stock. Fleece offers fuel upgrades, turbo system upgrades, intake upgrades, and more to add power and performance to your aggressive truck. Fleece has Duramax upgrades, Cummins upgrades, and Powerstroke upgrades available that will give your tough diesel truck power, torque, and throttle response gains. Fleece offers a vast selection of diesel power upgrades to provide you exactly what you need to maximize your diesels performance.

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Fleece FPE-61-10003-P Cylinder Head (Passenger Side) | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-61-10003-P Cylinder Head (Passenger Side) | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-61-10003-P Cylinder Head (Passenger Side) | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-61-10003-P
Sale price
$1,019.15
Regular price
$1,199
SAVE $179.85
Fleece FPE-61-10003-D Cylinder Head (Driver Side) | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
IN STOCK
Fleece FPE-61-10003-D Cylinder Head (Driver Side) | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Fleece Performance Products

Fleece FPE-61-10003-D Cylinder Head (Driver Side) | 2006-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

SKU: FLCFPE-61-10003-D
Sale price
$1,019.15
Regular price
$1,199
SAVE $179.85
Fleece FPE-34200-8 8 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal
IN STOCK
Fleece FPE-34200-8 8 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

Fleece Performance Products

Fleece FPE-34200-8 8 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

SKU: FLCFPE-34200-8
Sale price
$37.40
Regular price
$44
SAVE $6.60
Fleece FPE-34200-12 12 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal
IN STOCK
Fleece FPE-34200-12 12 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

Fleece Performance Products

Fleece FPE-34200-12 12 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

SKU: FLCFPE-34200-12
Sale price
$44.20
Regular price
$52
SAVE $7.80
Fleece FPE-34200-15 15 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal
IN STOCK
Fleece FPE-34200-15 15 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

Fleece Performance Products

Fleece FPE-34200-15 15 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

SKU: FLCFPE-34200-15
Sale price
$49.30
Regular price
$58
SAVE $8.70
Fleece FPE-34197 Fuel Rail Adapter Fitting | 2012-2018 Dodge RAM 2500/3500 6.7L Cummins
IN STOCK
Fleece FPE-34197 Fuel Rail Adapter Fitting | 2012-2018 Dodge RAM 2500/3500 6.7L Cummins

Fleece Performance Products

Fleece FPE-34197 Fuel Rail Adapter Fitting | 2012-2018 Dodge RAM 2500/3500 6.7L Cummins

SKU: FLCFPE-34197
Sale price
$20.14
Regular price
$23.70
SAVE $3.56
Fleece FPE-34200-10 10 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal
IN STOCK
Fleece FPE-34200-10 10 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

Fleece Performance Products

Fleece FPE-34200-10 10 inch High Pressure Fuel Line 8mm x 3.5mm Line M14 x 1.5 Nuts | Universal

SKU: FLCFPE-34200-10
Sale price
$40.80
Regular price
$48
SAVE $7.20
Fleece FPE-CUMM-UBFA-1324 Heater Upgrade Kit | 2019-2024 RAM 2500/3500 6.7L Cummins 24V
Fleece FPE-CUMM-UBFA-1324 Heater Upgrade Kit | 2019-2024 RAM 2500/3500 6.7L Cummins 24V

Fleece Performance Products

Fleece FPE-CUMM-UBFA-1324 Heater Upgrade Kit | 2019-2024 RAM 2500/3500 6.7L Cummins 24V

SKU: FLCFPE-CUMM-UBFA-1324
Sale price
$254.15
Regular price
$299
SAVE $44.85
Fleece FPE-TL-LML-1114 Transmission Cooler Line Set | 2011-2014 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML
IN STOCK
Fleece FPE-TL-LML-1114 Transmission Cooler Line Set | 2011-2014 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

Fleece Performance Products

Fleece FPE-TL-LML-1114 Transmission Cooler Line Set | 2011-2014 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax LML

SKU: FLCFPE-TL-LML-1114
Sale price
$280.49
Regular price
$329.99
SAVE $49.50
Fleece FPE-61-10014-P Freedom Series Duramax Cylinder Head (Passenger Side) | 2017-2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
Fleece FPE-61-10014-P Freedom Series Duramax Cylinder Head (Passenger Side) | 2017-2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax

Fleece Performance Products

Fleece FPE-61-10014-P Freedom Series Duramax Cylinder Head (Passenger Side) | 2017-2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax

SKU: FPE-61-10014-P
Sale price
$934.15
Regular price
$1,099
SAVE $164.85
Fleece FPE-61-10014-D Freedom Series Duramax Cylinder Head (Driver Side) | 2017-2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
Fleece FPE-61-10014-D Freedom Series Duramax Cylinder Head (Driver Side) | 2017-2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax

Fleece Performance Products

Fleece FPE-61-10014-D Freedom Series Duramax Cylinder Head (Driver Side) | 2017-2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax

SKU: FPE-61-10014-D
Sale price
$934.15
Regular price
$1,099
SAVE $164.85
Fleece FPE-61-10013-HD Freedom Series 12 Valve Cummins Cylinder Head (Street HD) | 1994-1998 Dodge Ram 2500/3500 5.9L 12V Cummins
Fleece FPE-61-10013-HD Freedom Series 12 Valve Cummins Cylinder Head (Street HD) | 1994-1998 Dodge Ram 2500/3500 5.9L 12V Cummins

Fleece Performance Products

Fleece FPE-61-10013-HD Freedom Series 12 Valve Cummins Cylinder Head (Street HD) | 1994-1998 Dodge Ram 2500/3500 5.9L 12V Cummins

SKU: FPE-61-10013-HD
Sale price
$1,486.65
Regular price
$1,749
SAVE $262.35
Fleece FPE-CUMM-HCL-KIT-9902 Heater Feed and Return Hose Kit | 1998.5-2002 Dodge RAM 2500/3500 5.9L Cummins VP
IN STOCK
Fleece FPE-CUMM-HCL-KIT-9902 Heater Feed and Return Hose Kit | 1998.5-2002 Dodge RAM 2500/3500 5.9L Cummins VP

Fleece Performance Products

Fleece FPE-CUMM-HCL-KIT-9902 Heater Feed and Return Hose Kit | 1998.5-2002 Dodge RAM 2500/3500 5.9L Cummins VP

SKU: FLCFPE-CUMM-HCL-KIT-9902
Sale price
$67.99
Regular price
$79.99
SAVE $12
Fleece FPE-HAR-LM2-INJ-12P-PT Injector Harness Pigtail | 2020-2024 GM 3.0L Duramax LM2/LZ0
IN STOCK
Fleece FPE-HAR-LM2-INJ-12P-PT Injector Harness Pigtail | 2020-2024 GM 3.0L Duramax LM2/LZ0

Fleece Performance Products

Fleece FPE-HAR-LM2-INJ-12P-PT Injector Harness Pigtail | 2020-2024 GM 3.0L Duramax LM2/LZ0

SKU: FLCFPE-HAR-LM2-INJ-12P-PT
Sale price
$42.49
Regular price
$49.99
SAVE $7.50
Fleece FPE-HAR-FMC-EXBP-2020-PT Exhaust Backpressure Sensor Pigtail | 2020-2024 Ford 250/350/450 Super Duty 6.7L Powerstroke
IN STOCK
Fleece FPE-HAR-FMC-EXBP-2020-PT Exhaust Backpressure Sensor Pigtail | 2020-2024 Ford 250/350/450 Super Duty 6.7L Powerstroke

Fleece Performance Products

Fleece FPE-HAR-FMC-EXBP-2020-PT Exhaust Backpressure Sensor Pigtail | 2020-2024 Ford 250/350/450 Super Duty 6.7L Powerstroke

SKU: FLCFPE-HAR-FMC-EXBP-2020-PT
Sale price
$33.99
Regular price
$39.99
SAVE $6
Fleece FPE-61-10011-HD Freedom Series HD Cylinder Head - 18mm Dowel | 2003-2007 Ford Super Duty 6.0L Powerstroke
IN STOCK
Fleece FPE-61-10011-HD Freedom Series HD Cylinder Head - 18mm Dowel | 2003-2007 Ford Super Duty 6.0L Powerstroke

Fleece Performance Products

Fleece FPE-61-10011-HD Freedom Series HD Cylinder Head - 18mm Dowel | 2003-2007 Ford Super Duty 6.0L Powerstroke

SKU: FLCFPE-61-10011-HD
Sale price
$1,359.15
Regular price
$1,599
SAVE $239.85
Fleece FPE-61-10012-HD Freedom Series HD Cylinder Head - 20mm Dowel | 2003-2007 Ford F250/F350 Super Duty 6.0L Powerstroke
IN STOCK
Fleece FPE-61-10012-HD Freedom Series HD Cylinder Head - 20mm Dowel | 2003-2007 Ford F250/F350 Super Duty 6.0L Powerstroke

Fleece Performance Products

Fleece FPE-61-10012-HD Freedom Series HD Cylinder Head - 20mm Dowel | 2003-2007 Ford F250/F350 Super Duty 6.0L Powerstroke

SKU: FLCFPE-61-10012-HD
Sale price
$1,359.15
Regular price
$1,599
SAVE $239.85
Fleece FPE-HAR-GM-NSBU-0104 NSBU Pigtails | 2001-2004 GM 6.6L Duramax w/ Allison Transmission
IN STOCK
Fleece FPE-HAR-GM-NSBU-0104 NSBU Pigtails | 2001-2004 GM 6.6L Duramax w/ Allison Transmission

Fleece Performance Products

Fleece FPE-HAR-GM-NSBU-0104 NSBU Pigtails | 2001-2004 GM 6.6L Duramax w/ Allison Transmission

SKU: FLCFPE-HAR-GM-NSBU-0104
Sale price
$67.99
Regular price
$79.99
SAVE $12
Fleece FPE-HAR-DMAX-MAF-1116-PT MAF Sensor Pigtail | 2011-2016 GM 6.6L Duramax
IN STOCK
Fleece FPE-HAR-DMAX-MAF-1116-PT MAF Sensor Pigtail | 2011-2016 GM 6.6L Duramax

Fleece Performance Products

Fleece FPE-HAR-DMAX-MAF-1116-PT MAF Sensor Pigtail | 2011-2016 GM 6.6L Duramax

SKU: FLCFPE-HAR-DMAX-MAF-1116-PT
Sale price
$25.49
Regular price
$29.99
SAVE $4.50
Fleece FPE-HAR-FMC-CCH-2022 Charging Circuit Harness | 2020-2022 Ford F250/F350 6.7L Powerstroke
IN STOCK
Fleece FPE-HAR-FMC-CCH-2022 Charging Circuit Harness | 2020-2022 Ford F250/F350 6.7L Powerstroke

Fleece Performance Products

Fleece FPE-HAR-FMC-CCH-2022 Charging Circuit Harness | 2020-2022 Ford F250/F350 6.7L Powerstroke

SKU: FLCFPE-HAR-FMC-CCH-2022
Sale price
$115.59
Regular price
$135.99
SAVE $20.40
Fleece FPE-FMC-FF-RLK-1116-SER Service Kit for Injector Return Line Repair Fitting | 2011-2016 Ford F250/F350 6.7L Powerstroke
IN STOCK
Fleece FPE-FMC-FF-RLK-1116-SER Service Kit for Injector Return Line Repair Fitting | 2011-2016 Ford F250/F350 6.7L Powerstroke

Fleece Performance Products

Fleece FPE-FMC-FF-RLK-1116-SER Service Kit for Injector Return Line Repair Fitting | 2011-2016 Ford F250/F350 6.7L Powerstroke

SKU: FLCFPE-FMC-FF-RLK-1116-SER
Sale price
$8.49
Regular price
$9.99
SAVE $1.50
Fleece FPE-FMC-FF-RLK-1116-5P Injector Return Line Repair Fitting (5-Pack) | 2011-2016 Ford F250/F350 6.7L Powerstroke
IN STOCK
Fleece FPE-FMC-FF-RLK-1116-5P Injector Return Line Repair Fitting (5-Pack) | 2011-2016 Ford F250/F350 6.7L Powerstroke

Fleece Performance Products

Fleece FPE-FMC-FF-RLK-1116-5P Injector Return Line Repair Fitting (5-Pack) | 2011-2016 Ford F250/F350 6.7L Powerstroke

SKU: FLCFPE-FMC-FF-RLK-1116-5P
Sale price
$297.45
Regular price
$349.95
SAVE $52.50
Fleece FPE-FMC-FF-RLK-1724-SER Service Kit for Injector Return Line Repair Fitting | 2017-2024 Ford F250/F350 Super Duty 6.7L Powerstroke
IN STOCK
Fleece FPE-FMC-FF-RLK-1724-SER Service Kit for Injector Return Line Repair Fitting | 2017-2024 Ford F250/F350 Super Duty 6.7L Powerstroke

Fleece Performance Products

Fleece FPE-FMC-FF-RLK-1724-SER Service Kit for Injector Return Line Repair Fitting | 2017-2024 Ford F250/F350 Super Duty 6.7L Powerstroke

SKU: FLCFPE-FMC-FF-RLK-1724-SER
Sale price
$12.53
Regular price
$14.75
SAVE $2.22
Fleece FPE-FMC-FF-RLK-1724-5P Injector Return Line Repair Fitting (5-Pack) | 2017-2024 Ford F250/F350 Super Duty 6.7L Powerstroke
IN STOCK
Fleece FPE-FMC-FF-RLK-1724-5P Injector Return Line Repair Fitting (5-Pack) | 2017-2024 Ford F250/F350 Super Duty 6.7L Powerstroke

Fleece Performance Products

Fleece FPE-FMC-FF-RLK-1724-5P Injector Return Line Repair Fitting (5-Pack) | 2017-2024 Ford F250/F350 Super Duty 6.7L Powerstroke

SKU: FLCFPE-FMC-FF-RLK-1724-5P
Sale price
$276.20
Regular price
$324.95
SAVE $48.75

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