Hummer Models - Non-CARB Compliant by Jerry Forehand

Name: Dorman 674-703: Front Catalytic Converter with Exhaust Manifold for Chevy/GMC/Hummer Models - Non-CARB Compliant
Item: Dorman 674-703: Front Catalytic Converter with Exhaust Manifold for Chevy/GMC/Hummer Models - Non-CARB Compliant
Rating: 4

September 05, 2022

Good fit with some light sanding to clean the mating surface.

The manifold fits well, the mating face needed grinding to ensure tightness and leaks. The supplied seal is not recommended, just cleaned the original steel seal and it worked great. The upper heat shield fits snugly, but there is no mount for the lower heat shield to protect the lower control arm bushing. (very close) Used two steel clamps and all is well. The part fit well and has worked great so far.

Pros

Free for educational purposes

Cons

Useless features

New products

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