Authentic GM Fuel Injector used in 4.3L and 5.7L post 2007. Injector contains one red and one blue o-ring. Older models use injector with black and blue O-rings). If you have an older model see part number 446105.

Authentic GM Fuel Injector used in 4.3L and 5.7L pre 2007. GM Part Number 12567905. Injector contains one black and one blue o-ring. Newer models use (GM 12609192). If you have a newer model see part number 446155.

Authentic GM Fuel Injector used in GM 6.2L LS3 Engines. GM Part Number: 12576341.

Authentic GM Fuel Injector used in GM 6.2L LSA Engines. GM Part Number: 12598646. AC Delco Number: 217-3350 .