Description Injector Line for 2001-2004.5 GM 6.6L Duramax LB7 OEM# 97188722 Fits Cylinder 4 or 5 Fuel Injector Line restores proper operation of the fuel injection system by effectively cycling fuel through the injectors. Required replacement when changing injectors Manufactured from high-quality materials for durability Direct replacement for a proper fit every time OE Quality Lifetime Warranty