Dorman 904-133 Fuel Injector o-ring kit 01-04 LB7 Duramax

Engineered from high-quality rubber for superior resistance to fuel, oil, and heat, the Dorman Fuel Injector O-ring is designed to provide a secure air-tight seal. This complete kit, containing multiple rings in various sizes, makes installation fast and convenient. O-rings are recommended for replacement anytime you service the fuel injectors.

Includes seals for one side of engine. For complete engine must select QTY 2.

Fits: 2001 - 2004 GMC / Chevy 2500 / 3500 6.6L LB7 Duramax