Fleece Performance

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...

The Fleece Performance Charging Circuit Harness for the 2017-2018 Ford 6.7L Power Stroke is a drop-in replacement with no cutting or splicing to fix the common problem of an intermittent or...

Our replacement fan extension harness for the 2017-2019 L5P Duramax allows you to repair a broken or damaged harness without needing to replace the entire fan assembly. This harness is mounted to the...

Our replacement fan extension harness for the 2017-2019 L5P Duramax allows you to repair a broken or damaged harness without needing to replace the entire fan assembly. This harness is mounted to the...

Fleece Performance Cheetah turbochargers set the industry standard for power, quality, and reliability. Designed as a stock appearing, drop-in replacement turbocharger capable of much more! With our...

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...

Fuel heater kit specifically for use in conjunction with Fleece Performance fuel filter kits installed on the 2017-2024 Ford 6.7L Powerstroke. This kit includes the fuel heater and chassis harness to...

2017-2024 Ford 6.7L Powerstroke Cab and Chassis owners - This extension harness is required in combination with part number FPE-FH-FMC-1724 when adding the optional fuel heater to the under bed...

Service your 2017-2024 Fleece Performance Injector Return Repair fitting (FPE-FMC-FF-RLK-1724) with our service kit that includes new O-rings and locking ring. Kit includes 2 O-rings, 1 locking ring,...

The plastic factory injector return connector on the 2017-2024 6.7L Power Stroke is susceptible to breakage from heat, vibration, rough handling and frequent disconnections for fuel filter...

Ready to upgrade your factory under bed fuel filtration on your 2017 – 2024 Ford 6.7L Powerstroke? The latest OEM+ solution from Fleece Performance is a true drop-in" upgrade to the furnace style...