Fleece Fuel Rail Pressure Harness (FPE-HAR-DMAX-LML-RP) for 2011-2016 Duramax 6.6L LML

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The Fleece Fuel Rail Pressure Harness (FPE-HAR-DMAX-LML-RP) is a durable, plug-and-play aftermarket harness designed for 2011–2016 GM Duramax 6.6L LML diesel engines. It offers a reliable connection to the factory fuel rail pressure sensor, ensuring accurate fuel pressure readings for optimal engine performance. Made with OEM-grade materials, it’s ideal for replacing damaged OEM parts or upgrading for improved reliability.

 

Replaces discontinued GM part number: 12647115 and 12638158

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SKU: FPE-HAR-DMAX-LML-RP Categories: , , ,
Description

The Fleece Fuel Rail Pressure Harness (FPE-HAR-DMAX-LML-RP) is a high-quality aftermarket solution designed specifically for 2011-2016 GM Duramax 6.6L LML diesel engines. Engineered for durability and ease of installation, this harness allows for a clean and secure connection to the factory fuel rail pressure sensor. Whether you’re replacing a damaged OEM harness or upgrading for improved reliability, the Fleece FPE-HAR-DMAX-LML-RP ensures accurate fuel pressure readings essential for optimal engine performance. Built with OEM-grade connectors and materials, it provides a plug-and-play fit, making it a dependable choice for diesel enthusiasts and professional mechanics alike.

Additional information
Weight 1.0 lbs
Dimensions 11.0 × 5.0 × 5.0 in
Fitment

Fitment

  • 2011 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
  • 2012 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
  • 2013 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
  • 2014 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
  • 2015 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
  • 2016 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
Features

Features

APPLICATION NOTES

2011-2016 6.6L Duramax Fuel Rail Pressure Harness – This harness routes underneath the turbocharger and connects to the main chassis harness. 

Installation

Installation

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About brand
Fleece Performance Engineering is a diesel performance manufacturer focused on reliability and precision engineering. The company designs parts that solve common diesel issues while supporting added power. Fleece products support daily driving, towing, and performance diesel trucks. Fleece engineers fuel system components, turbochargers, electronics, and emissions-compliant upgrades in house. Their parts improve efficiency, drivability, and long-term engine protection. Each product is tested for proper fit and consistent performance. Diesel owners trust Fleece for dependable upgrades. Whether maintaining a work truck or building for performance, Fleece delivers proven solutions designed for real-world use.
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