Fleece #3 and #6 High Pressure Injection Line (FPE-FL-LLY-36) 2004.5-2005 Duramax LLY

$77.16

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

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Description

The Fleece #3 and #6 High Pressure Injection Line (FPE-FL-LLY-36) is a high-quality replacement component specifically designed for 2004.5–2005 GM Duramax LLY diesel engines. This upgraded fuel line replaces the factory #3 and #6 lines, which are known to be prone to cracking and leakage over time due to high pressure and thermal cycling. Manufactured with durable materials and precision engineering, the Fleece Performance line ensures reliable fuel delivery from the high-pressure pump to the injectors, helping to maintain optimal engine performance and efficiency. It is an essential upgrade for LLY owners seeking to improve fuel system reliability and prevent costly injector or engine damage.

Additional information
Weight 2.0 lbs
Dimensions 10.0 × 4.0 × 4.0 in
Fitment

Fitment

  • 2004.5 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax
  • 2005 GM Silverado/Sierra 2500/3500 6.6L LLY 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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