FLEECE PERFORMANCE ENGINEERING

Introducing our Freedom Series cylinder heads - Give new life to your engine with our fully remanufactured Cummins cylinder head. Each head is manufactured in our state-of-the-art cylinder head...

Freedom Series Cummins Performance cylinder heads. Each head is manufactured in our state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are...

Freedom Series cylinder heads. Each head is manufactured in our state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are inspected, pressure...

Freedom Series Cummins Performance cylinder heads. Each head is manufactured in our state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are...

Give new life to your engine with a brand new Freedom Series Cummins cylinder head. Each head is manufactured in our state-of-the-art Freedom Racing Engine shop and guaranteed to meet or exceed...

Introducing our Freedom Series cylinder heads for the 2017 - 2023 L5P 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or...

Introducing our Freedom Series cylinder heads for the 2017 - 2023 L5P 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or...

6061 Aluminum Black Anodize 7/8 inch-14 o-ring Fitment: S300 S400 Garrett (LLY-LML) IHI (LB7) HE341 ('03-'05 Cummins) HE351CW ('06-'07 Cummins) HE351VE ('07+ Cummins)Upgrade your performance with...

Our universal 45 degree turbo drain nipple with integrated O-ring seal is designed to fit 7/8 Inch ID Hose. Made from billet aluminum and anodized in black. Fitment: Garrett (LLY-LML) IHI (LB7) HX35...

2013-2018 6.7L Cummins A/C Line Reroute Kit - If you are looking to do an aftermarket turbo set up like a 2nd Gen Swap Kit, or Compund Kit then this kit is a must! The factory A/C lines are in the...

Our Fleece Pre-filters are specially designed to extend the service interval of your air filter when used in heavy dust conditions. Made from a durable polyester material it will stop small dirt...

Our Fleece Pre-filters are specially designed to extend the service interval of your air filter when used in heavy dust conditions. Made from a durable polyester material it will stop small dirt...

Control your torque converter from the palm of your hand with the AlliLocker from Fleece Performance Engineering. The AlliLockeris 100 percent code free and allows you to bypass the TCM to...

Stay safer, see further, and brighten your night time driving experience with our All Lights On device. The All Lights On allows your high-beams, low-beams, and fog lamps to all be on simultaneously...

Brighten up your driving experience with this simple upgrade inside your underhood relay box. Simply install the All Lights On module to allow your high-beams and fog lamps to simultaneously...

Brighten up your driving experience with this simple upgrade inside your underhood relay box. Simply install the All Lights On module to allow your high-beams, low-beams and fog lamps to...

Our black anodized, billet aluminum barb fitting is a direct replacement for use on the injector return line repair fittings for the 6.7L Power Stroke. 3/32 inch Hose Barb to 7/16 inch-20 O-ring (-4...

-8AN Aluminum Male Weld Bung (1/2 inch Register, 3/4 inch OD)The FLEECE FPE-AN971-08DRD -8AN Aluminum Male Weld Bung is an essential addition for any serious automotive enthusiast or performance...

-10AN Aluminum Male Weld Bung (5/8 inch Register, 7/8 inch OD)Upgrade your automotive plumbing system with the FLEECE FPE-AN971-10DRD -10AN Aluminum Male Weld Bung. This high-quality component is...

-8 to 3/4 Inch-16 Straight Male Black w/ O-Ring. Features: Fitting Style: Adapter Fitting Category: AN to Inverted flare Fitting Angle: Straight Fitting Material: Aluminum Fitting Color: Black...

Negative 8AN to 3/4-16 O-ring, 90 Degree Fitting. Features: Fitting Style: 90 degree Adapter Fitting Category: AN flare to O-ring Fitting Angle: 90 degree Fitting Material: Aluminum Fitting Color:...

Our 3/4 inch-16 O-ring to 1/8 inch NPT adapter with 1/8 NPT plug is perfect for adding a pressure gauge port on multiple applications. The adapter is made from black anodized aluminum and the 1/8 NPT...

Negative 8AN Female Swivel to 7/8-14 O-Ring. Features: Fitting Style: Straight Swivel Adapter Fitting Category: AN flare to O-Ring Fitting Angle: Straight Fitting Material: Aluminum Fitting Color:...

-6 to 9/16 inch-18 Straight Male Black Fleece Performance w/ O-Ring. Features: Fitting Style: Adapter Fitting Category: AN to Inverted flare Fitting Angle: Straight Fitting Material:...

Replacement oil feed adapter fitting for our Fleece Performance turbocharger oil feed line kits, FPE-CRTFL-S3S4 and FPE-CRTFL-OE. Features: Hose End 1 Size: -6 AN Fitting Style: AN Hose End 2 Size:...

Fleece Performance Billet Rocker Arm Bridges for 1998.5-2018, 24V 5.9L/6.7L Cummins (Set of 12)Features: These bridges offer a massive 2.5-times strength improvement over the factory bridges...

Fleece Performance billet rocker arm bridges for the GM Duramax. These bridges offer a massive 2.5-time strength improvement over factory bridges. Machined from billet 8620 steel, the bridges are...

Turn over your Cummins with ease with this Cummins Crankshaft Barring Tool. Features: Accepts 1/2 inch drive ratchet Designed to be used with factory crank bolts and roll pins No need to remove...

Cummins Dual Pump Controller for use with Fleece Performance 5.9L and 6.7L dual pump kits or other dual pump applications on a Cummins engine. Cummins Dual Pump Controller (5.9L and 6.7L CP3 or 6.7L...

2003-2007 Cummins Coolant Bypass Brackets (Set of two)Give your 2003-2007 Cummins engine the upgrade it deserves with the FLEECE FPE-CLNT-HS-BRKT Coolant Bypass Brackets. Designed for optimal...

Replacement O-ring Kit for all Fleece Cummins Coolant Bypass. When used with MY94 - MY2002 kits, not all O-rings will be utilized. Kits includes: 3 new square cut O-rings 1 new standard O-ring 2 new...

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

The Fleece Performance coolant bypass for the 2007.5-2012 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish.Features: Increased Coolant Flow, Decreased Coolant...

Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

The Fleece Performance coolant bypass for the 2013-2018 RAM with 6.7L Cummins seamlessly integrates with your truck for an OE fit-and-finish.Features: Increased Coolant Flow, Decreased Coolant...

Just in time for Summer! Our all-new Fleece Performance coolant bypass for the 2019-Present RAM with 6.7L Cummins! Our patent pending design seamlessly integrates with your truck for an OE...

Increased Coolant Flow, Decreased Coolant Temperatures, The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Complete kit to service your Fleece Performance Coolant Bypass - Includes all O-rings, fasteners, and a new thermostat. Features: Two thermostats included to service all production years, you will...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Increased Coolant Flow, Decreased Coolant Temperatures. The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This...

Replacement Coolant Bypass Hose for our 2007.5-2018 Ram 6.7L Cummins coolant bypass kits. This hose is covered with a high temperature protective sleeve.Application Notes: Direct replacement hose...

39.50 inch 12 Valve Cummins Coolant Bypass Hose (Black Nylon Braided)The FLEECE FPE-CLNTBYPS-HS-12V-BLK 39.50 Inch 12 Valve Cummins Coolant Bypass Hose is the ultimate solution for anyone seeking...

39.50 inch 12 Valve Cummins Coolant Bypass Hose - Stainless Steel BraidedThe FLEECE FPE-CLNTBYPS-HS-12V-SS 39.50 inch 12 Valve Cummins Coolant Bypass Hose is engineered for durability and high...

Replacement Coolant Bypass Hose for our 2019-Present Ram 6.7L Cummins coolant bypass kit.Warranty: 1 Year Limited Parts Warranty Revitalize your 2019-Present Ram 6.7L Cummins with the FLEECE...

34.5 inch Common Rail/VP44 Cummins Coolant Bypass Hose (Black Nylon Braided)The Fleece FPE-CLNTBYPS-HS-CRVP-BLK 34.5 Inch Common Rail/VP44 Cummins Coolant Bypass Hose is meticulously engineered for...

Replacement coolant bypass house with stainless steel braiding for our Common Rail/VP44 Cummins Coolant Bypass Kits.  34.5 inch Common Rail/VP44 Cummins Coolant Bypass Hose - Stainless Steel...

Replacement EPDM hose for the Fleece Performance coolant bypass for model years 2003-2005 (Fleece part numbers FPE-CLNTBYPS-CUMMINS-0305 and FPE-CLNTBYPS-CUMMINS-0305-SS). Fits: 2003-2005 Dodge Ram...

Replacement EPDM hose for the Fleece Performance coolant bypass for model years 2006-2007 (Fleece part numbers FPE-CLNTBYPS-CUMMINS-0607 and FPE-CLNTBYPS-CUMMINS-0607-SS). Fits: 2006-2007 Dodge Ram...

High quality stainless steel fitting desinged to allow for increased fuel feed capacity to the CP3. Features: 1/2 inch Barbed Inlet Made from high quality 316 Stainless Steel Includes sealing...

High quality stainless steel fitting desinged to allow return fuel to freely flow from your CP3 Features: 3/8 inch Barbed Outlet Made from high quality 316 Stainless Steel Includes sealing...

Take full control of your Cummins dual CP3's using your just your ECM. The CP3X2 harness allows you to control your Cummins dual pumps without an expensive dual pump controller.  We recommend...

2007.5-2018 Cummins Regulated Return Fuel Distribution Block. The Fleece Performance Cummins Regulated Return Fuel Distribution block takes our standard fuel distribution block to the next level by...

Ensure your turbocharger has a good oil supply line with with our replacement turbocharger oil feed line kit designed for use with a Cheetah or stock Holset VGT turbocharger in the factory location...

Ensure your turbocharger has a good oil supply line with with our replacement turbocharger oil feed line kit designed for use with a Cheetah or stock Holset turbocharger in the factory location...

Replacement Turbo Oil Feed Line designed for use with a 1/4 inch NPT inlet turbochargers. The oil feed line is intended for use with S300 or S400 turbochargers mounted in a lower position and WILL...

The Cummins Turbo Drain Tube Adapter is made from high quality 6061 aluminum and anodized black for a superior appearance. It fits into the block like the factory drain tube, but allows you to use...

The Cummins turbo drain tube adapter is made from high quality 6061 aluminum and anodized black for a superior appearance. It fits into the engine block drain tube location just like the factory...

Eliminate the installation headaches associated with a non-flexible OE drain line with our ALL NEW silicone hose drain tube kit. This turbo drain kit is designed for use with all 2019-Present 6.7L...

Eliminate the installation headaches associated with a non-flexible OE drain line with our all new silicone hose drain tube kit. This turbo drain kit is designed for use with all 5.9L Cummins...

Eliminate the installation headaches associated with a non-flexible OE drain line with our silicone hose drain tube kit. This turbo drain kit is designed for use with all 12V/24V 5.9L Cummins...

Put the finishing touches on your truck with this high quality Cummins Turbo Drain Tube Kit. The tube is braided stainless steel for durability on the exterior, and corrugate teflon tubing for flow...

Replacement turbo drain O-rings for all Fleece Performance turbo oil drain tube kits. Contains two O-rings for the drain adapter that inserts into the engine block and two square cut O-ring options...

Replace your cracked, broken, or clogged turbo oil drain tube with our all new silicone hose drain tube kit.  This turbo drain kit is designed for use with all factory VGT turbochargers and...

Upgrading or replacing your turbocharger? Upgrade your turbocharger CCV tube coupler from the OE's plastic tube that is prone to cracking and breakage with our anodized billet aluminum...

Upgrade your factory plastic coolant reservoir with our direct replacement fabricated aluminum tank! Powder coated in gloss black, our tank is an excellent upgrade for those simply needing to replace...

The 5.9L CumminsPowerFlo 750 is a straight forward, no inflated numbers, CP3 upgrade proven to support 750 RWHP with the proper complimenting modifications. Not only will it support 750 RWHP, but it...

The 6.7L CumminsPowerFlo 750 is a straight forward, no inflated numbers, CP3 upgrade proven to support 750 RWHP with the proper complimenting modifications. Not only will it support 750 RWHP, but it...

The PowerFlo 1000 high performance 12mm stroker CP3 pump for the 2003-2007 5.9L Cummins is capable of supporting up to 1,000+ RWHP! Features: Full fuel delivery to 6,000+ RPM. New OEM unmodified FCA...

The PowerFlo 1000 high performance 12mm stroker CP3 pump for the 2007.5-2018 6.7L Cummins is capable of supporting up to 1,000+ RWHP! Features: Full fuel delivery to 6,000+ RPM. New OEM unmodified...

Anodized billet aluminum with our custom spoke design. Includes integral O-ring. 2003-2018 Cummins CP3 Nut Cover Transform the aesthetic of your engine bay with the FLEECE FPE-CUMM-CP3-CVR 03-18...

Convert your 5.9L CP3 to a newer 6.7L CP3 style pump with our Fleece Performance exclusive 5.9L to 6.7L adaptation kit. The kit includes a new high-pressure fuel line, high flow feed and return...

The Fleece Performance CP3K is a modified 5.9L Cummins CP3 designed to eliminate the factory fuel flow restriction that begins at 3,000 RPM. If you have a stock CP3 pump you are losing fuel flow and...

The Fleece Performance CP3K is a modified 6.7L Cummins CP3 designed to eliminate the factory fuel flow restriction that begins at 3,000 RPM. If you have a stock CP3 pump you are losing fuel flow and...

Complete installation kit for CW style turbochargers on the 2003-2007 RAM with 5.9L Cummins.Kit Includes: Turbocharger exhaust inlet gasket, T3 non-divided Turbocharger oil drain gasket Turbocharger...

Replacement M22 thermostat plug for use on Cummins cylinder heads. Includes O-ring. Replaces Cummins part number 3089238. Warranty: 1 Year Limited Parts Warranty Fitment: 2003-2007 Dodge Ram...

Replacement cylinder head dowels for use between the engine block and cylinder head. Kit includes 2 dowels. Application Notes: Replaces Cummins part number 3902343. Fits 1989-2023 Cummins 12 valve...

The exhaust back pressure relocation Kit for 2007.5-2012 RAM w/ 6.7 Cummins will allow you to relocate the EBP sensor from the factory location on thermostat housing elbow to a new mounting block on...

Cummins Mechanical Fuel Pump Block Off Plate. Have you upgraded from your factory mechanical lift pump to an electric pump? This block off will eliminate the void left by your stock pump. Complete...

Replacement front cover dowels for use on Cummins 5.9L and 6.7L engines. Kit includes 2 dowels. Application Notes: Replaces Cummins part number 3949326 Fits MY 2003-2018 Experience superior...

Eliminate the troublesome and leaky quick-connect heater core line on your 2003-2024 RAM with the latest OEM plus solution from Fleece Performance! Our stainless steel fitting and silicone hose kit...

Introducing our all-new full featured auxiliary fuel filter kit for the 2003-2018 Dodge Cummins. This kit builds off our standard auxiliary kit with the addition of an integral high-flow fuel heating...

Trust Fleece Performance to bring you the best OE alternative parts you need! Our replacement head gasket for the 2003-2007 Dodge 5.9L Cummins will ensure your engine gets the optimal reseal...

Get the optimal seal with the Fleece Performance fire ring head gasket for the 2003-2007 Dodge 5.9L Cummins. This head gasket is a direct replacement for use with our 5.9L Freedom Series Performance...

Trust Fleece Performance to bring you the best OE alternative parts you need! Our replacement head gasket for the 6.7L Cummins will ensure your engine gets the optimal reseal.Features: OE...

Get the optimal seal with the Fleece Performance fire ring head gasket for the 2007.5-2018 Dodge 6.7L Cummins. This head gasket is a direct replacement for use with our 6.7L Freedom Series...

Complete installation kit for HX35 style turbochargers on the 1994-2002 RAM with 5.9L Cummins.Kit Includes: Turbocharger exhaust inlet gasket, T3 divided Turbocharger oil drain gasket Turbocharger...

Trust Fleece Performance to bring you the best OE alternative parts you need! Our replacement rocker armassembly fits 1998.5-2018 Dodge 5.9L and 6.7L Cummins engines.Features: Direct fit...

Upgraded 3/8 inch diameter pushrods for Cummins 24V diesel engines. Produced from 4130 chrome molybdenum steel and heat treated to Rockwell Rc60 for outstanding strength and rigidity. These pushrods...

All new stainless steel fuel tube nuts from Fleece Performance.  Ensure a proper seal on your injector tubes and high pressure injection lines with our high tolerance nuts produced from 300 series...

Replace your leaking or corroded heater tubes with our upgraded stainless steel tubes and high temperature silicone hose kit from Fleece Performance. This kit contains everything you need to replace...

The Fleece Performance replacement thermostat housing with auxiliary port is a direct replacement part for model years 1998.5-2007 RAM with 5.9L Cummins and 2013-2018 RAM with 6.7L Cummins. The...

The Fleece Performance replacement thermostat housing with auxiliary port is a direct replacement part for model years 2019-2024 RAM with 6.7L Cummins. The auxiliary port is threaded to accept a...

Tired of over-priced fuel filter service costs and questionable filter options? Our direct replacement under bed fuel filter base for the 2019-2024 Ram with 6.7L Cummins allows you to convert to a...

Complete installation kit for VGT style turbochargers on the 2007.5-2018 RAM with 6.7L Cummins.Kit Includes: Turbocharger exhaust inlet gasket Turbocharger oil drain gasket Turbocharger cooling port...