Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with...

Introducing our Freedom Series cylinder heads for the 6.6L Duramax! Each cylinder head is manufactured in our state-of-the-art Freedom Racing Engine shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with...

Dress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes o-ring and cam-lock and is a direct replacement for your OEM cover. 2001-2016 Duramax Oil Cap Black Vehicle Fitments Chevrolet Silverado 3500 2001 to 2006 Chevrolet Silverado 2500...

Dress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes o-ring and cam-lock and is a direct replacement for your OEM cover. 2001-2016 Duramax Oil Cap Blue Vehicle Fitments Chevrolet Silverado 3500 2001 to 2006 Chevrolet Silverado 2500...

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 surface ground for flatness, feature improved oiling to the valve stems, and case hardened and...

2001-2004 LB7 Injection Lines complete set of 8- Over time LB7 Injection lines corrode and break, they are a leading cause of contamination when changing the Injectors. So if you are changing your injectors, or have a line failure we've got you covered with...

The PowerFlo lift pump is the latest OEM replacement performance lift pump from the diesel experts at Fleece Performance. The PowerFlo is the only in-tank lift pump capable of supporting up to 800 hp! The LML when delivered from the factory relies on vacuum...

The PowerFlo lift pump is the latest OEM replacement performance lift pump from the diesel experts at Fleece Performance. The PowerFlo is the only in-tank lift pump capable of supporting up to 800 hp! The LML when delivered from the factory relies on vacuum...

2004.5-2010 Duramax Billet Turbo Resonator Delete Plug (LLY/LBZ/LMM) Vehicle Fitments Chevrolet Silverado 3500 2004 to 2006 GMC Sierra 3500 2004 to 2006 GMC Sierra 2500 HD 2004 to 2010 Chevrolet Silverado 2500 HD 2004 to 2010 Chevrolet Silverado 2500 HD Classic 2007 to 2007...

The 63mm FMW Duramax VNT Cheetah Turbocharger is a drop-in replacement turbocharger for 2011-2016 Duramax diesels. It comes with a Fleece Performance Engineered 63mm FMW compressor wheel and high flow Cheetah turbine wheel. This drop-in replacement turbo is guaranteed to enhance your driving experience....

Wake up your 2001-2004 LB7 with the drop in replacement Fleece Performance LB7 Cheetah Turbocharger. Featuring a Fleece Performance custom 63mm billet compressor wheel and high flow Inconel turbine wheel, this turbo can power your truck all the way up to 625RWHP! 100 percent...

Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your LBZ or LMM truck! It includes all of the necessary fittings whether your truck is running a...

The Fleece Performance CP3K is a modified Duramax LBZ 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 rail pressure after 3000 RPM, which correlates to...

The Fleece Performance Duramax Turbo Thermostat Delete Plug is designed to eliminate the stock coolant feed line when installing a non-water cooled turbocharger on your Duramax. It provides clearance for larger intake plumbing, is CNC machined from 6061-T6 aluminum, and uses an o-ring seal...

The Fleece Performance Duramax 10mm stroker CP3 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 also eliminates the factory fuel flow restiction that begins...

The Fleece Performance Intake Air Heater Delete is a simple way to remove the air intake heater on your 2001-2004 GM 6.6L Duramax. Complete with a pre-drilled and tapped ports for a boost gauge, nitrous, water methanol injection and other accessories. Features: Increase Intake...

Want to get rid of that big ugly resonator under the hood of your LML? This billet aluminum plate, anodized in black with Fleece engraved across the top will take its place and give your truck some personality. Our resonator delete plate is designed...

FASS Fuel Systems 2001-2016 Duramax Factory Fuel Filter Delete Canister (DFD4000) Part No: DFD4000 Once you've installed an aftermarket Fuel Filtration System such as our FASS Titanium Series, the use of the factory fuel filter is no longer required and can be removed. Because...

The Titanium Signature Series diesel fuel system was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 140 gallons per hour and backed by our limited lifetime warranty the...

The Titanium Signature Series diesel fuel system was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 140 gallons per hour and backed by our limited lifetime warranty the...

The Titanium Signature Series diesel fuel system was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 140 gallons per hour and backed by our limited lifetime warranty the...

FASS Fuel Systems Dura-Max Diesel System 2001-2010 GM Duramax 6.6L (DMAX7001) Part No: DMAX7001 Duramax diesel engines do not come with a factory System, this is why Duramax owners see such great performance and economy gains after installing an aftermarket diesel fuel System. When...

FASS Fuel Systems Dura-Max Diesel System 2011-2016 GM Duramax 6.6L (DMAX7002) Part No: DMAX7002 Duramax diesel engines do not come with a factory System, this is why Duramax owners see such great performance and economy gains after installing an aftermarket diesel fuel System. When...

FASS Fuel Systems Signature Series Adjustable Diesel Fuel System 100GPH GM Duramax 6.6L 2001-2016 (FASC09100G) Part No: FAS C09 1000G Our FASS Signature Series Adjustable Diesel Fuel Systems are designed to be the most versatile high performance fuel System on the market that allows...

FASS Fuel Systems Adjustable Diesel Fuel System 165GPH GM Duramax 6.6L 2001-2016 (FASC09165G) Part No: FASC09165G Our FASS Signature Series Adjustable Diesel Fuel Systems are designed to be the most versatile high-performance fuel System on the market that allows for adjustable fuel pressures to...