Fitment: Specifically designed for 2004.5-2010 GM Diesel vehicles with LLY, LBZ, LMM engines; NOT compatible with LB7 applications, serving both engine sides.
Function: Repairs and maintains injector fuel return systems, prevents oil leakage via reinforced line clamps, ensuring stable diesel fuel flow.
Material: Crafted with durable, fuel-resistant return line hose and high-seal O-rings; retaining clips and clamps offer long-lasting reliability under engine conditions.