Fleece Performance

Replacement fuel pump pigtail for the 2017-2024 6.7L Powerstroke. Includes heat-sealable butt-style connectors. Produced in-house, our manufacturing process includes fully automated wire cutting and...

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...

The Fleece Performance Charging Circuit Harness for the 2019 Ford 6.7L Power Stroke is a drop-in replacement with no cutting or splicing to fix the common problem of an intermittent or continuously...

All new Fleece Performance MAP sensor spacer for the secondary MAP sensor on the 2024-2025 L5P 6.6L Duramax. Because of the direct placement of the MAP sensor into the intake air stream from the...

Replacement M22 thermostat plug for use on Cummins cylinder heads.  Includes O-ring. Replaces Cummins part number 3089238. 

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 repair a malfunctioning fuel level sender or if you...

Heat exchanger bypass kit for use when installing a coolant bypass kit or needing to bypass the factory heat exchanger mounted on the driver's side of the engine.  Includes 2 caps for the heat...

Repair your throttle valve actuator connector with our repair pigtail. Produced in-house, our manufacturing process includes fully automated wire cutting and terminal crimping to ensure you get the...