Fleece Oil Pressure Sensor Pigtail (FPE-HAR-DMAX-OP-0310) for 2003-2010 Duramax LB7 / LLY / LBZ / LMM

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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.

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Description

The Fleece Oil Pressure Sensor Pigtail (FPE-HAR-DMAX-OP-0310) is a high-quality replacement wiring harness designed specifically for 2003-2010 GM Duramax diesel engines, including the LB7, LLY, LBZ, and LMM models. This pigtail provides a reliable solution for repairing damaged or corroded oil pressure sensor connectors, which are critical for accurate engine oil pressure readings and proper engine function. Built with durable materials and OEM-style connectors, it ensures a secure and weather-resistant fit, restoring proper communication between the oil pressure sensor and the vehicle’s ECM. Whether you’re performing routine maintenance or troubleshooting oil pressure issues, the Fleece pigtail offers a dependable and cost-effective fix for Duramax owners.

Additional information
Weight 2.0 lbs
Dimensions 12.0 × 4.0 × 4.0 in
Fitment

Fitment

  • 2003 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
  • 2004 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
  • 2004.5 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax
  • 2005 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax
  • 2006 GM Silverado/Sierra 2500/3500 6.6L LLY/LBZ Duramax
  • 2007 GM Silverado/Sierra 2500/3500 6.6L LLY/LBZ Duramax (classic body style)
  • 2007.5 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax (new body style)
  • 2008 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax
  • 2009 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax
  • 2010 GM Silverado/Sierra 2500/3500 6.6L LMM Duramax
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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