Flowtech 1-5/8-Inch Shorty Headers; Ceramic (99-02 4.8L, 5.3L Sierra 1500)Find parts that fit my vehicle

More Horsepower and Torque. With these Flowtech 1-5/8-Inch Shorty Headers with a Ceramic finish, gain additional torque and horsepower from your Sierra. The headers are designed and engineered to provide better exhaust flow that translates to unprecedented performance gains from your truck's engine.

For an Aggressive Exhaust Tone. These headers give your truck an aggressive exhaust sound due to the easier flow of exhaust gases. Turn heads with a sound that gives justice to the engine's power.

Works with Stock Catalytic Converters. These are designed to work with the stock catalytic converters. Since these work with the factory components, you won't have to worry about violating emissions regulations.

Top-Notch Build Quality. Using 16 gauge steel for their construction, these headers are built to last. Three-eights-inch flanges ensure a leak-free seal, while the ceramic finish provides excellent thermal protection.

Does Not Require a Retune. These headers are designed to work out of the box with no retune needed. A custom tuning to reprogram the ECU is always beneficial to get maximum gains from the product.

50-State Legal. These headers are 50-state legal under CARB EO No. D-115-16.

Application. These Flowtech 1-5/8-Inch Shorty Headers with a Ceramic finish will work with all models of the 1999-2002 GMC Sierra 1500 5.3L and 4.8L.

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