Duramax: 2004.5-2005 (LLY)
Fleece 6″ Straight Cut Hood Stack Cover (FPE-HSC-6-S) for 6″ Exhaust Pipe
The Fleece 6″ Straight Cut Hood Stack Cover (FPE-HSC-6-S) is a durable, heavy-duty cover designed to protect 6-inch exhaust hood stacks on performance diesel trucks. It prevents debris and moisture from entering the exhaust when not in use and features a straight-cut design for a secure fit and professional look. Built to withstand harsh weather, it is a reliable accessory for maintaining exhaust system integrity.
Fleece 5″ Straight Cut Hood Stack Cover (FPE-HSC-5-S) for 5″ Exhaust Pipe
The Fleece 5″ Straight Cut Hood Stack Cover (FPE-HSC-5-S) is a durable, high-performance exhaust accessory designed for 5-inch exhaust pipes. Featuring a sleek, straight-cut design, it protects the exhaust system from debris, moisture, and contaminants when not in use. Built to withstand high temperatures and harsh conditions, it’s ideal for performance trucks and custom builds, offering both protection and style.
Fleece 5″ 45 Degree Hood Stack Cover (FPE-HSC-5-45) for 5″ Exhaust Pipe
The Fleece 5″ 45 Degree Hood Stack Cover (FPE-HSC-5-45) is a durable, weather-resistant cover designed to protect 5-inch, 45-degree angled exhaust stacks commonly used in performance diesel trucks. It prevents debris and moisture from entering the exhaust system, helping to extend component life and maintain performance. Easy to install and remove, it offers reliable protection during downtime or transport.
Fleece 4″ Short Hood Stack Cover – Straight Cut (FPE-HSC-4-S) for 4″ Exhaust Pipe
The Fleece 4″ Short Hood Stack Cover – Straight Cut (FPE-HSC-4-S) is a durable, weather-resistant cover designed to protect 4″ straight-cut exhaust stacks from rain, snow, and debris. It helps maintain exhaust system efficiency and longevity when the vehicle is not in use. Easy to install and remove, it’s a practical accessory for truck owners.
Fleece 4″ Short Hood Stack Cover – Miter Cut (FPE-HSC-4-45) for 4″ Exhaust Pipe
The Fleece 4″ Short Hood Stack Cover – Miter Cut (FPE-HSC-4-45) is a durable, high-quality cover designed to protect 4-inch miter-cut exhaust stacks from moisture, dirt, and debris. Made from heavy-duty materials, it ensures a secure fit and helps extend the life and performance of diesel truck exhaust systems when not in use.
Fleece 18″ Rail Pressure Sensor Extension Harness (FPE-HAR-RP-EXT) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML& 2003-2012 Cummins 5.9L / 6.7L
The Fleece 18″ Rail Pressure Sensor Extension Harness (FPE-HAR-RP-EXT) is a plug-and-play aftermarket solution for 2001–2016 Duramax and 2003–2012 Cummins engines. It provides an 18-inch extension for easier relocation of the rail pressure sensor during custom builds or fuel system upgrades. Built to OEM specs, it ensures a secure, reliable connection without the need for wire cutting or splicing.
Fleece Multiuse Sensor Pigtail (FPE-HAR-MU-PT-5) for 2001-2022 Duramax LB7 / LLY / LBZ / LMM / LML / L5P & 1994-2022 Cummins 5.9L / 6.7L
The Fleece Multiuse Sensor Pigtail (FPE-HAR-MU-PT-5) is a durable, weatherproof wiring solution compatible with 2001–2022 Duramax and 1994–2022 Cummins diesel engines. Featuring OEM-style connectors, it serves as a reliable replacement or upgrade for various sensor connections, ideal for both repairs and custom builds.
Fleece Multiuse Sensor Pigtail No 11 (FPE-HAR-MU-PT-11) for 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
The Fleece Multiuse Sensor Pigtail No. 11 (FPE-HAR-MU-PT-11) is a durable, OEM-style replacement wiring solution for 2001–2016 Duramax diesel engines (LB7, LLY, LBZ, LMM, LML). Designed for easy installation and reliable sensor connections, it helps maintain proper engine management. Made from automotive-grade materials, it offers long-lasting performance in tough conditions and is ideal for replacing damaged connectors or custom wiring upgrades.
Fleece Heated Seat Module Connector Pigtail (FPE-HAR-HSM-PT) for 2003-2006 Duramax LB7 / LLY / LBZ & 2011-2019 Powerstroke 6.7L
The Fleece Heated Seat Module Connector Pigtail (FPE-HAR-HSM-PT) is a durable, OEM-grade replacement wiring solution for repairing or replacing damaged heated seat module connectors in select diesel trucks, including 2003–2006 GM Duramax and 2011–2019 Ford Powerstroke models. Designed for easy installation, it ensures reliable electrical connections and long-lasting performance, restoring heated seat functionality and comfort.
Fleece Automatic Transmission 20-Pin Pigtail GM (FPE-HAR-GM-AT-20-PT) for 2001-2016 Duramax LB7 / LLY / LBZ / LML
The Fleece Performance FPE-HAR-GM-AT-20-PT is a high-quality 20-pin transmission pigtail designed for 2001–2016 GM Duramax diesel trucks (LB7, LLY, LBZ, LML). Built for durability and OEM fit, it provides a reliable fix for damaged connectors and supports transmission swaps, harness repairs, or custom builds. Its plug-and-play design ensures secure connectivity and optimal transmission performance.
Replaces discontinued GM part number 12126459 and AC Delco PT729
Fleece Vane Position Sensor Pigtail (FPE-HAR-DMAX-VPS-0405) for 2004.5-2005 LLY
The Fleece Vane Position Sensor Pigtail (FPE-HAR-DMAX-VPS-0405) is a durable, plug-and-play replacement wiring harness for 2004.5-2005 GM Duramax LLY engines. Designed to replace damaged or corroded vane position sensor connectors, it ensures proper turbocharger function and engine performance. Featuring OEM-style connectors, it provides a reliable electrical connection, eliminates turbo-related error codes, and is built to withstand harsh diesel engine conditions.
Fleece Oil Pressure Sensor Pigtail (FPE-HAR-DMAX-OP-0310) for 2003-2010 Duramax LB7 / LLY / LBZ / LMM
The Fleece Oil Pressure Sensor Pigtail (FPE-HAR-DMAX-OP-0310) is a durable, OEM-style replacement harness for 2003–2010 GM Duramax diesel engines (LB7, LLY, LBZ, LMM). It repairs damaged or corroded oil pressure sensor connectors, ensuring accurate pressure readings and proper engine function. Designed for a secure, weather-resistant fit, it provides a reliable and cost-effective solution for maintenance or troubleshooting.
Fleece MAP BARO Sensor Pigtail (FPE-HAR-DMAX-MAP-0107) for 2001-2007 Duramax LB7 / LLY / LBZ
The Fleece MAP BARO Sensor Pigtail (FPE-HAR-DMAX-MAP-0107) is a direct-fit replacement connector for 2001–2007 GM Duramax diesel engines (LB7, LLY, LBZ). Designed to replace damaged or corroded MAP or BARO sensor connectors, it features OEM-style construction and durable wiring for reliable performance in harsh engine conditions. Ideal for maintenance, repairs, or troubleshooting.
Fleece Crankshaft Position Sensor Pigtail (FPE-HAR-DMAX-CPS-0416) for 2004.5-2016 Duramax LLY / LBZ / LMM / LML
The Fleece Crankshaft Position Sensor Pigtail (FPE-HAR-DMAX-CPS-0416) is a durable, direct-fit replacement harness for 2004.5–2016 GM Duramax diesel engines (LLY, LBZ, LMM, LML). Made with OEM-style connectors and automotive-grade wiring, it repairs damaged crankshaft position sensor connectors to restore accurate engine timing and performance, helping prevent misfires, hard starts, and error codes.
Replaces PT2547 and AC Delco 13576413
Fleece #4 and #5 High Pressure Injection Line (FPE-FL-LLY-45) 2004.5-2005 Duramax LLY
The Fleece Performance High Pressure Injection Line (#4 and #5) is a durable, precision-engineered replacement part for the 2004.5–2005 GM Duramax LLY diesel engine. Designed to meet or exceed OEM standards, it ensures reliable fuel delivery and optimal engine performance for cylinders #4 and #5. Built to withstand high pressure and harsh conditions, it’s ideal for replacing worn or leaking factory lines, helping maintain fuel injection timing and engine efficiency.
Replaces GM Part # 97378827
Fleece #3 and #6 High Pressure Injection Line (FPE-FL-LLY-36) 2004.5-2005 Duramax LLY
The Fleece #3 and #6 High Pressure Injection Line is a durable, high-quality replacement for the factory fuel lines on 2004.5–2005 GM Duramax LLY diesel engines. Designed to address common issues like cracking and leaks from high pressure and heat, this upgraded line improves fuel system reliability and helps maintain engine performance. It’s a crucial upgrade for preventing potential injector or engine damage.
Replaces GM Part # 97378826
Fleece #2 and #7 High Pressure Injection Line (FPE-FL-LLY-27) 2004.5-2005 Duramax LLY
The Fleece #2 and #7 High Pressure Injection Line (FPE-FL-LLY-27) is a direct-fit replacement part for 2004.5–2005 Duramax LLY diesel engines. Made by Fleece Performance Engineering, it connects cylinders #2 and #7 to the fuel rail, ensuring accurate high-pressure fuel delivery. Built from durable materials to withstand extreme conditions, it meets or exceeds OEM standards, making it a reliable choice for restoring or enhancing engine performance and fuel system durability.
Replaces GM Part # 97378828
Fleece #1 and #8 High Pressure Injection Line (FPE-FL-LLY-18) 2004.5-2005 Duramax LLY
The Fleece Performance High Pressure Injection Line (FPE-FL-LLY-18) is a durable, OEM-quality replacement designed for the 2004.5–2005 GM Duramax LLY diesel engine. It addresses common issues with factory lines—such as cracking, leaks, and flow restrictions—by ensuring reliable fuel delivery to cylinders #1 and #8, helping maintain engine performance and efficiency. Ideal for restoring or upgrading the fuel system in LLY-powered trucks.
Replaces GM Part # 97378825
Fleece High Pressure Injection Line Kit (FPE-FL-DMAX-LLY-SET) for 2004.5-2005 Duramax LLY
The Fleece High Pressure Injection Line Kit (FPE-FL-DMAX-LLY-SET) is a high-quality replacement designed for 2004.5–2005 GM 6.6L Duramax LLY diesel engines. It includes OEM-style fuel lines that connect the fuel rails to the injectors, offering durability, leak prevention, and reliable performance under high pressure. Suitable for both stock and modified setups, this kit is an ideal upgrade or replacement for factory lines to maintain consistent engine performance.
Replaces GM Part# 97378825 (qty 2)
Replaces GM Part# 97378828 (qty 2)
Replaces GM Part# 97378826 (qty 2)
Replaces GM Part# 97378827 (qty 2)
Fleece High Pressure Injection Line Kit (1 Year Limited Parts Warranty) for 2006-2010 Duramax LLY / LBZ
The Fleece High Pressure Injection Line Kit is a high-quality aftermarket upgrade for 2006–2010 GM Duramax LLY and LBZ diesel engines. It replaces factory fuel lines with durable, corrosion-resistant components to ensure consistent fuel delivery and maintain optimal injection pressure. Designed for high-performance or heavily used trucks, the kit enhances fuel system reliability and comes with a 1-year limited parts warranty.
Replaces GM Part # 98006523 (qty 2)
Replaces GM Part # 98006527 (qty 2)
Replaces GM Part # 98006524 (qty 2)
Replaces GM Part # 98006526 (qty 2)
Fleece Oil Cooler Adapter O-ring Kit (FPE-DMAX-OCADPT-ORING-KIT) for 2001-2016 Duramax LB7 / LLY / LBZ / LML
The Fleece Oil Cooler Adapter O-ring Kit (FPE-DMAX-OCADPT-ORING-KIT) is a durable, OEM-compatible replacement kit by Fleece Performance Engineering, designed for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ, LML). It includes all necessary O-rings to reseal the oil cooler adapter, helping prevent oil leaks and maintain engine performance—ideal for routine maintenance or oil cooler servicing.
Fleece Performance Billet Oil Cap Red (FPE-DMAX-OC-RED) for 2001-2016 Duramax LB7 / LLY / LBZ
The Fleece Performance Billet Oil Cap Red (FPE-DMAX-OC-RED) is a high-quality aftermarket upgrade for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ). Made from durable billet aluminum with a red anodized finish, it offers a secure fit, corrosion resistance, and enhanced engine bay aesthetics—combining style and function for Duramax owners.
Fleece Performance Billet Oil Cap Blue (FPE-DMAX-OC-BLU) for 2001-2016 Duramax LB7 / LLY / LBZ
The Fleece Performance Billet Oil Cap Blue (FPE-DMAX-OC-BLU) is a durable, anodized aluminum upgrade for 2001–2016 GM Duramax diesel engines (LB7, LLY, LBZ). It offers a secure, leak-free seal and enhances engine bay aesthetics with its vibrant blue finish. Designed for a precise fit, it replaces the factory cap with a corrosion-resistant, high-performance alternative ideal for diesel enthusiasts seeking improved function and style.
Fleece Performance Billet Oil Cap Black (FPE-DMAX-OC-BLK) for 2001-2016 Duramax LB7 / LLY / LBZ
The Fleece Performance Billet Oil Cap Black (FPE-DMAX-OC-BLK) is a durable, high-quality aluminum replacement for 2001–2016 GM Duramax diesel engines. It features a sleek black anodized finish for corrosion resistance and improved aesthetics. Designed for a perfect fit, it ensures a secure seal to maintain oil pressure and prevent leaks, making it ideal for both performance enthusiasts and daily drivers.
