Availability
2003 GMC SIERRA 1500 HD Exhaust
Catalytic Converters, Direct-Fit, Stock Flange Inlet, 2.85 in. Slip Fit Outlet, 30.50 in. Overall Length, Right, Chevrolet, GMC, Each
Part Number: APH-645454
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Walker Ultra Direct-Fit Catalytic Converters for 2002-2006 SIERRA 1500 HD, SILVERADO 1500 HD - 54899
Walker Ultra Direct-Fit Catalytic Converters for 2002-2006 SIERRA 1500 HD, SILVERADO 1500 HD - 54899
Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Slip Fit Outlet, Ceramic Honeycomb, Heat Shield, Chevrolet, GMC, Each
Part Number: WLK-54899
Not Yet Reviewed
Estimated Ship Date: Feb 26, 2026 if ordered today
Estimated Ship Date: Feb 26, 2026 if ordered today
Exhaust Pipe Connector, Inside Diameter 2.750 in,, Length 43.750 in., Steel, Aluminized, Chevrolet, GMC, Each
Part Number: WLK-54901
Not Yet Reviewed
Estimated Ship Date: Feb 26, 2026 if ordered today
Estimated Ship Date: Feb 26, 2026 if ordered today
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