Fleece Performance

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...

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...

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...

Our replacement fan extension harness for the 2019-2024 Ram with 6.7L Cummins allows you to repair a broken or damaged harness without needing to replace the entire fan and clutch assembly.  This...

The Fleece Performance Charging Circuit Harness for the 2020-2022 Ford 6.7L Power Stroke is a drop-in replacement with no cutting or splicing to fix the common problem of an intermittent or...