Fleece Performance

Upgrade your Cummins valve springs and retainers with our Fleece Performance spring and retainer kit. Our springs are manufactured from super clean...

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 Free...

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 Free...

The Fleece Performance L5P fuel filter upgrade kit allows you to seamlessly change over from the stock cartridge style filter to a spin-on canister...

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

All new for the 2003-2007 Dodge RAM! Control your transmission temperatures and tow with confidence with the latest improvement for your Dodge Ram ...

The SureFlo performance sending unit from Fleece Performance is a drop-in replacement for the1999-2007 Ford 7.3/6.0L Powerstroke trucks needing to ...

The SureFlo performance sending unit from Fleece Performance is a drop-in replacement for the1999-2007 Ford 7.3/6.0L Powerstroke trucks needing to ...

The Fleece Performance L5P fuel filter upgrade kit allows you to seamlessly change over from the stock cartridge style filter to a spin-on canister...

Our Fuel Pressure Regulator (FPR) harness for the 2001-2010 6.6L Duramax is a direct replacement for GM Part Number: 97378671 (MY 2006-2010) and 97...

2019+ 5th Gen Dodge Ram with Cummins, Fuel Filter Delete. If you have an aftermarket fuel filtration system such as an Air Dog or a FASS, your fact...

Upgrade your fuel system with this fuel filter delete from Fleece Performance Engineering. If you have an aftermarket fuel filtration system such a...

Upgrade your fuel system with this fuel filter delete from Fleece Performance Engineering. If you have an aftermarket fuel filtration system such a...

Eliminate the installation headaches associated with a non-flexible OE drain line with our silicone hose drain tube kit. This turbo drain kit is de...