Fleece Performance

The plastic factory injector return fitting on the 2011-2016 6.7L Power Stroke is susceptible to breakage from heat, vibration, rough handling, and frequent disconnections for fuel filter maintenance...

Replacement fuel pump pigtail for the 2011-2016 6.7L Powerstroke. Includes two heat-sealable butt-style connectors. Produced in-house, our manufacturing process includes fully automated wire cutting...

The Fleece Performance under bed filter for the 2011-2016 6.7L Power Stroke allows you to maintain both your under bed and under hood fuel filters separately instead of being required to purchase in...

The PowerFlo lift pump is the latest drop-in lift pump from the diesel experts at Fleece Performance! Needing to replace your factory pump or looking to upgrade? This kit includes both the PowerFlo...

Our Fuel Rail Pressure harness for the 2011-2016 6.6L Duramax is a direct replacement for GM Part Numbers 12647115 and 12638158. Produced in-house, our manufacturing process includes fully automated...

Replacement high pressure fuel line for 6.6L LML Duramax's with CP3 conversion kits. Fitment: Direct replacement line that is originally included in Fleece Performance kit part numbers:...

Introducing our all-new full featured auxiliary fuel filter kit for the 2011-2016 LML 6.6L Duramax! This kit replaces the factory fuel filter housing with a new filter base, integral high-flow fuel...

Make installation and removal of the dosing injector fuel line on 2011-2016 LML Duramax engines a breeze with our fuel line disconnect tool.  This Part...

Convert your LML's fuel system from a CP4 to a CP3. Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable...

Convert your LML's fuel system from a CP4 to a CP3. Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable...

Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous...

Our replacement fan extension harness for the 2011-2016 LML Duramax allows you to repair a broken or damaged harness without needing to replace the entire fan assembly. This harness is mounted to the...