Fleece Performance Engineering
Fleece Tall Stack Cover – 7″ Diameter – Straight Cut (FPE-STK-CVR-7-S) fits 7″ stack
The Fleece Tall Stack Cover – 7″ Diameter – Straight Cut (FPE-STK-CVR-7-S) is a universal, durable exhaust stack cover designed to protect 7-inch diameter tall stacks from moisture, debris, and environmental damage. Made by Fleece Performance Engineering, it features a straight cut design, weather-resistant materials, and is easy to install and remove—ideal for preserving the performance and longevity of diesel truck exhaust systems.
Fleece Black Billet Oil Cap Cover (FPE-OC-CR-F) for 2003-2024 Cummins 5.9L / 6.7L
The Fleece Black Billet Oil Cap Cover (FPE-OC-CR-F) is a durable, precision-machined aluminum upgrade for 2003–2024 Cummins 5.9L and 6.7L engines. Featuring a sleek black anodized finish, it fits securely over the factory oil cap, enhancing engine bay appearance without affecting performance or sealing. Ideal for Cummins diesel owners seeking style and durability.
Fleece Return Fuel Pressure Test Port (FPE-FPTP-GM-1116) for 2011-2016 Duramax LML
The Fleece Return Fuel Pressure Test Port (FPE-FPTP-GM-1116) is a diagnostic tool for 2011–2016 GM Duramax LML diesel engines that enables accurate monitoring of return fuel pressure. Made by Fleece Performance Engineering, it helps diagnose fuel system issues like injector leaks or line restrictions. Built with high-quality materials for a secure, leak-free fit, it integrates easily into the factory system and is suitable for both professionals and advanced DIY users.
Fleece Oil Cooler Adapter (FPE-DMAX-OCADPT) for 2001-2016 Duramax LB7 / LLY / LBZ / LML
The Fleece Performance FPE-DMAX-OCADPT Oil Cooler Adapter is a durable aftermarket upgrade for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ, LML). Designed for a direct fit, it improves engine oil cooling for better temperature control under heavy loads or performance use. Ideal for enhancing engine reliability and longevity, it offers a secure, leak-free connection and easy installation for professionals or experienced DIYers.
Fleece MAP Sensor Spacer with Boost Reference Port (FPE-L5P-MAP-SPR) for 2017-2024 Duramax L5P
The Fleece MAP Sensor Spacer with Boost Reference Port (FPE-L5P-MAP-SPR) is an upgrade for 2017–2024 Duramax L5P diesel engines that installs between the factory MAP sensor and intake manifold. It provides a boost reference point without modifying factory parts, making it ideal for external boost applications like turbo controllers or gauges. Featuring a built-in 1/8” NPT port, it offers easy integration and is made from durable materials to handle high boost and harsh conditions while preserving OEM sensor function.
LML CP3 Conversion Kit with Heavy Duty CP3 (FPE-LML-CP3-10) for 2011-2016 LML Duramax
Improve your LML Duramax’s reliability and fueling capability with a CP3 conversion (FPE-LML-CP3-10). Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms. Failures of the CP4 are extremely costly and require replacement of the entire fuel system.
Fleece Allison Transmission Cooler Lines (FPE-TL-LBZ-LMM) for 2006-2010 Duramax LBZ / LMM
The Fleece Allison Transmission Cooler Lines (FPE-TL-LBZ-LMM) are durable, high-performance replacements for the factory transmission lines in 2006–2010 GM Duramax LBZ and LMM trucks with Allison transmissions. Made from braided stainless steel with high-quality AN fittings, they offer improved reliability, leak prevention, and fluid flow, making them ideal for heavy-duty use and towing. These lines are a long-lasting upgrade over the stock rubber hoses, which are prone to wear and leaks.
Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10003-P) for 2006-2010 Duramax LBZ / LMM
The Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10003-P) is a high-quality replacement for 2006–2010 GM Duramax LBZ and LMM diesel engines. Designed for durability and performance, it enhances airflow and cooling, making it suitable for both stock and high-performance setups. Built to exceed OEM standards, it ensures a reliable seal and efficient combustion, making it ideal for engine rebuilds or heavy-duty upgrades.
Fleece Intake Air Temperature Sensor Extension Harness (FPE-HAR-67-IAT-EXT) for 2013-2018 Cummins 6.7L
The Fleece Intake Air Temperature (IAT) Sensor Extension Harness (FPE-HAR-67-IAT-EXT) is a durable, plug-and-play solution for 2013–2018 Cummins 6.7L engines. It allows easy relocation of the IAT sensor during aftermarket turbo installations, custom intercooler setups, or performance upgrades. Featuring OEM-style connectors for a secure, no-splice installation, it ensures reliable performance and sensor accuracy under harsh engine conditions.
Fleece Turbo Compressor Discharge Adapter Kit for S400 Turbos (FPE-S4TCDA-KIT) Universal
The Fleece Turbo Compressor Discharge Adapter Kit (FPE-S4TCDA-KIT) is a durable, high-quality solution for connecting S400 turbochargers to custom intercooler piping. Made from robust, machined aluminum, it ensures optimal airflow and reliable performance under high boost. Its universal design fits a wide range of applications, making it ideal for diesel upgrades and high-performance builds.
Fleece Outer Injector Harness Pigtail (FPE-HAR-DMAX-LB7-INJ-PT) for 2001-2004 Duramax LB7
The Fleece Performance Fleece Outer Injector Harness Pigtail (FPE-HAR-DMAX-LB7-INJ-PT) is a high-quality, direct-fit replacement for the outer injector harness on 2001–2004 GM 6.6L Duramax LB7 engines. Designed to address issues like brittle, damaged, or corroded factory connectors, it features OEM-style connectors and premium wiring for durability and reliable performance. Ideal for repairs or custom rebuilds, it helps maintain proper injector function and engine efficiency, making it a trusted choice for technicians and Duramax enthusiasts.
Fleece Freedom Series Cylinder Head w/Cupless Injector Bore – Passenger Side (FPE-61-10001-P-CL) for 2001-2004 Duramax LB7
The Fleece Freedom Series Cylinder Head with Cupless Injector Bore (FPE-61-10001-P-CL) is a high-performance, fully assembled replacement for 2001–2004 GM Duramax LB7 engines. Made by Fleece Performance Engineering, it eliminates injector cups to prevent fuel leaks and boost reliability. Built from premium materials and precision-machined, it suits both stock and high-horsepower setups, offering durability, strength, and easy installation for those upgrading or rebuilding their engines.
Fleece Transmission Cooler Line Set (FPE-TL-LML-1516) for 2015-2016 Duramax LML
The Fleece Performance (FPE-TL-LML-1516) Transmission Cooler Line Set is a durable, high-performance upgrade for 2015-2016 GM Duramax LML trucks. Made with heavy-duty braided stainless steel and AN-style fittings, it replaces the leak-prone factory lines, ensuring secure connections, better fluid flow, and improved transmission cooling. This direct-fit kit installs easily without major modifications and is suitable for both stock and modified trucks, offering reliable, long-lasting transmission protection.
Fleece SureFlo® Performance Sending Unit (FPE-SF-CUMM-9197) for 1991-1997 Cummins 5.9L
The Fleece SureFlo Performance Sending Unit FPE-SF-CUMM-9197 installs in the factory sending unit location on 1991-1997 Cummins 5.9L trucks. It works with externally mounted lift pumps and removes the need for draw straws or tank sumps. The SureFlo bucket system helps eliminate the common ¼ tank fuel issue. It also includes a billet aluminum cap, new fuel level electronics, and universal –8 AN ports for custom fuel setups.
Fleece Performance Exhaust Manifold Stud Kit – 4mm Allen Socket Head (FPE-34772) for 1994-2018 Cummins 5.9L / 6.7L
The Fleece Performance Exhaust Manifold Stud Kit (FPE-34772) is a high-quality upgrade for 1994–2018 Cummins 5.9L and 6.7L diesel engines. It replaces weak factory bolts with durable, high-strength studs featuring 4mm Allen socket heads for easy installation and removal. Designed to prevent exhaust leaks and withstand extreme heat and pressure, this kit offers improved reliability, fitment, and longevity, making it ideal for maintenance or performance upgrades.
Fleece Injector Connector with Pigtail (FPE-HAR-CUMM-INJ-PT) for 2006-2024 Cummins 5.9/6.7L
The Fleece Injector Connector with Pigtail (FPE-HAR-CUMM-INJ-PT) is a durable, high-quality replacement for damaged injector wiring on 2006–2024 Cummins 5.9L and 6.7L engines. Featuring OE-style connectors and high-temp resistant wiring, it provides a reliable, long-lasting connection to the fuel injector. Ideal for repairs or upgrades, it offers a cost-effective alternative to replacing the entire harness, helping maintain optimal engine performance.
Fleece Fuel Distribution Block – 3rd Gen (FPE-FFD-RF-3G) for 2003-2007 Cummins 5.9L
The Fleece Fuel Distribution Block – 3rd Gen (FPE-FFD-RF-3G) is an aftermarket upgrade for 2003–2007 Dodge Ram trucks with 5.9L Cummins engines. Made by Fleece Performance Engineering, it replaces the stock fuel filter housing to improve fuel flow and simplify aftermarket fuel system plumbing. Built from billet aluminum, it includes multiple ports for easy integration with dual CP3 systems, fuel pressure sensors, and other upgrades. Designed for a precise fit, it supports improved fuel efficiency and higher horsepower goals.
Fleece Rail Pressure Sensor Pigtail (FPE-HAR-RP-PT) for 2001-2016 Duramax LB7 / LLY / LMM & 2003-2012 Cummins 5.9L / 6.7L
The Fleece Rail Pressure Sensor Pigtail (FPE-HAR-RP-PT) is a durable replacement wiring harness for the fuel rail pressure sensor on 2001–2016 Duramax and 2003–2012 Cummins diesel engines. Designed with OE-style connectors and weatherproof seals, it repairs damaged factory connectors to restore proper sensor-to-ECU communication, ensuring reliable fuel system performance in tough conditions.
Fleece Freedom Series Cylinder Head w/Cupless Injector Bore – Driver Side (FPE-61-10001-D-CL) for 2001-2004 Duramax LB7
The Fleece Freedom Series Cylinder Head with Cupless Injector Bore (Driver Side, FPE-61-10001-D-CL) is a high-quality replacement for 2001–2004 GM 6.6L Duramax LB7 engines. It features a cupless injector design to prevent coolant leaks and injector issues, and is made from premium materials with precision machining for excellent fit and durability. Each head is rigorously pressure-tested for reliability, making it ideal for both stock restorations and high-performance upgrades.
Fleece Replacement CP3 fuel feed hose for CP3 Conversion Kit (FPE-LML-HS-FEED ) for 2011-2016 Duramax LML
The Fleece Replacement CP3 Fuel Feed Hose (FPE-LML-HS-FEED) is a durable, high-performance hose designed for 2011–2016 Duramax LML engines undergoing a CP3 conversion. It replaces the stock fuel hose to ensure reliable fuel delivery to the CP3 injection pump, supporting improved engine performance and reliability in high-demand diesel applications.
Fleece Cheetah® Turbocharger (FPE-6.0STREET-0407) for 2004.5-2007 6.0L Powerstroke
Fleece Performance FPE-6.0STREET-0407 Cheetah turbo for 2004.5–2007 6.0 Powerstroke with 63mm FMW compressor and VNT design.
Fleece Holset HE300VG Turbocharger Actuator Pigtail (FPE-HAR-CUMM-VGT-PT) for 2013-2024 Cummins 6.7L
The Fleece Holset HE300VG Turbocharger Actuator Pigtail (FPE-HAR-CUMM-VGT-PT) is a durable, OEM-grade replacement wiring harness for 2013–2024 Cummins 6.7L engines with HE300VG turbochargers. It ensures reliable communication between the turbo actuator and the ECM, supporting proper turbo function and engine performance. Designed for heat, vibration, and corrosion resistance, it’s ideal for repairs or upgrades to maintain boost control and efficiency.
Fleece Green Billet Fuel Cap (FPE-FC-1316-GRN) for 2013-2018 Cummins 6.7L
The Fleece Green Billet Fuel Cap (FPE-FC-1316-GRN) is a durable, high-quality upgrade for 2013–2018 Cummins 6.7L diesel engines. Made from billet aluminum with a green anodized finish, it offers improved durability, a secure seal with a built-in O-ring, and enhanced aesthetics compared to stock or missing fuel caps. Designed for performance and style, it helps protect the fuel system from contaminants while adding a custom look.
Fleece PowerFlo® Lift Pump (FPE-34562) for 2011-2024 Cummins 6.7L
The Fleece PowerFlo® Lift Pump (FPE-34562) is a high-performance, in-tank fuel lift pump designed for 2011–2024 Dodge Ram trucks with 6.7L Cummins engines. It offers reliable, efficient fuel delivery for both stock and modified engines, featuring a quiet, OEM-style fit and dual Gerotor design for enhanced durability and flow. Unlike frame-mounted pumps, it integrates seamlessly into the factory system and eliminates the need for a separate fuel filtration setup.
