Availability
2004 GMC Exhaust
Muffler, Quiet-Flow 3, 2 1/2 in. Inlet/2 1/4 in. Outlet, Steel, Aluminized, Chevy, GMC, Isuzu, Each
Part Number: WLK-21302
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Air Pump, Replacement, Electric, Buick, Chevrolet, GMC, Oldsmobile, Each
Part Number: SMP-AIP3
Not Yet Reviewed
Estimated Ship Date: Apr 1, 2026 if ordered today
Estimated Ship Date: Apr 1, 2026 if ordered today
Mufflers, Direct-Fit, 2.50 in. Inlet/Outlet, Steel, Aluminized, Oval Case, 40.00 in. Overall Length, Buick, Chevrolet, GMC, Isuzu, Oldsmobile, Each
Part Number: BRE-100-5409
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Catalytic Converters, Universal, Single 2.50 in. Slip-fit Inlet/Outlet, AIR Tube, Stainless Steel Case, 12.250 in. Overall Length, Each
Part Number: APH-608416
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
EPA OBDII Direct Fit Converter 03-06 Chevy Silverado 2500 HD, 3500 HD 8 cyl., 6.0L, California emisions, left,
Part Number: CTO-9877
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Catalytic Converter, Stainless Steel, Each
Part Number: MPE-49668
Not Yet Reviewed
Estimated Ship Date: Mar 31, 2026 if ordered today
Estimated Ship Date: Mar 31, 2026 if ordered today
Catalytic Converter, Stainless Steel, Chevy, GMC, 4.8, 6.0L, Passenger Side, Each
Part Number: MPE-49602
Not Yet Reviewed
Estimated Ship Date: Apr 1, 2026 if ordered today
Estimated Ship Date: Apr 1, 2026 if ordered today
Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Heat Shield, Chevrolet, GMC, Each
Part Number: WLK-16612
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Catco Direct-Fit Catalytic Converters for 2004-2006 CANYON, COLORADO, 2006 I-280 - 1216
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026
Catalytic Converter, Direct Fit, Assembled Y-pipe, Stainless Steel Case, Cadillac, Chevy, GMC, Each
Part Number: WLK-81761
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Muffler, Pro, 3.000 in. Inlet/2.500 in. Outlet, Steel, Aluminized, Each
Part Number: IMM-7421CB
Estimated Ship Date: Mar 27, 2026 if ordered today
Estimated Ship Date: Mar 27, 2026 if ordered today
Intermediate Pipe, Outside Diameter 2.750 in., Steel, Aluminized, Cadillac, GMC, Each
Part Number: WLK-53946
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 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: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Ultra EPA Catalytic Converter
Part Number: WLK-14625
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Catalytic Converter, Stainless Steel, Chevy, GMC, 2.8, 3.5L, Each
Part Number: CTO-9216
Not Yet Reviewed
Estimated Ship Date: Mar 27, 2026 if ordered today
Estimated Ship Date: Mar 27, 2026 if ordered today
Headers, Cat4ward, Stainless Steel, Titanium Ceramic Coated, Chevy, GMC, Pickup, 4.3L, Pair
Part Number: JBA-1842S-9JT
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Catalytic Converters, Catalytic Converter - Universal, OBDII Select Plus
Part Number: APH-608757
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Exhaust Manifolds, Blackheart, Cast Iron, Silver Ceramic Coated, Chevrolet, GMC, Small Block LS, Pair
Part Number: HOK-BHS594
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Catalytic Converter, Stainless Steel, Chevy, GMC, 4.2L, Each
Part Number: MPE-23015
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Catalytic Converter, Direct-Fit Catalytic Converter
Part Number: MPE-4551419
Not Yet Reviewed
Estimated Ship Date: Apr 3, 2026 if ordered today
Estimated Ship Date: Apr 3, 2026 if ordered today
Exhaust Manifold, Cast Iron, Natural, Each
Part Number: RNB-674-5603
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Exhaust Clamp
Part Number: RNB-903-300
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Exhaust Manifold, Cast Iron, Natural, Each
Part Number: RNB-674-858
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Ceramic Manifold
Part Number: RNB-674-732XD
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
EPA OBDII Direct Fit Converter
Part Number: CTO-9878
Not Yet Reviewed
Estimated Ship Date: Mar 30, 2026 if ordered today
Estimated Ship Date: Mar 30, 2026 if ordered today
Catalytic Converter, Ultra Direct Fit, Stock Flange Inlet, Stock Flange Outlet, Ceramic Honeycomb, Chevrolet, GMC, Each
Part Number: WLK-56220
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster