Availability

- In Stock Items. Ships Today. (9) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (14) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (18) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Department
- Exhaust
- Gaskets & Seals
Part Type
- Catalytic Converters (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Exhaust Clamps (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Exhaust Flange and Donut Gaskets (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Exhaust Pipes, Intermediate Pipes (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Exhaust Hangers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Exhaust Pipes, Tailpipes (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Make/Engine
Price Range
Filter Options
- Stock Replacement (11)

2012 GMC SIERRA-1500 Walker Exhaust Parts and Accessories

Showing In Stock Items. Show All 18 Items.

Individual Parts

Part Groups

Results 1 - 14 of 14

Walker Lap-Joint Band Clamps 33272

Exhaust Clamp, Band-Style, Lap Joint, Stainless Steel, 3.000 in. Diameter, Each

Part Number: WLK-33272

4.59 out of 5 stars ( 73 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Lap-Joint Band Clamps 33226

Exhaust Clamp, Band-Style, Lap Joint, Stainless Steel, 2.500 in. Diameter, Each

Part Number: WLK-33226

4.68 out of 5 stars ( 87 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Ultra Direct-Fit Catalytic Converters 50490

Catalytic Converter, Direct Fit, Stainless Steel, Ceramic, Chevrolet, GMC, Each

Part Number: WLK-50490

3.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Band Clamps 36522

Exhaust Clamp, Band, Stainless Steel, Natural, 2.750 in. Pipe Diameter, Each

Part Number: WLK-36522

5.0 out of 5 stars ( 11 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Exhaust Flange Gaskets 31718

Exhaust Flange Gasket, Cadillac, Chevy, GMC, Each

Part Number: WLK-31718

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Band Clamps 36438

Exhaust Clamp, Band Clamp, Stainless Steel, 2.50 in. Pipe Diameter, Each

Part Number: WLK-36438

4.93 out of 5 stars ( 27 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Exhaust Flange Gaskets 31554

Exhaust Flange Gasket, Graphite Coated Metal Core, 3.060 in. O.D., Cadillac, Chevy, GMC, Each

Part Number: WLK-31554

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Exhaust Intermediate Pipes for 2009-2013 SIERRA 1500, SILVERADO 1500 - 54821

Intermediate Pipe, Outside Diameter 3.000 in., Steel, Aluminized, Chevrolet, GMC, Each

Part Number: WLK-54821

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Replacement Exhaust Insulators 35230

Exhaust Hangers, Replacement Exhaust Insulators, Rubber, Black, 4.000 in. Length, Buick, Chevy, GMC, Oldsmobile, Pontiac, Saturn, Each

Part Number: WLK-35230

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Walker Exhaust Intermediate Pipes for 2009-2013 SIERRA 1500, SILVERADO 1500 - 54831

Intermediate Pipe, Outside Diameter 3.000 in., Steel, Aluminized, Chevrolet, GMC, Each

Part Number: WLK-54831

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 10, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

AP Exhaust Intermediate Pipes for 2009-2013 SIERRA 1500, SILVERADO 1500 - 48697

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025

...Loading

Walker Exhaust Catalytic Converters 84723

CalCat CARB Catalytic Converter

Part Number: WLK-84723

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 10, 2025 if ordered today

Walker Exhaust Catalytic Converters 84802

CalCat CARB Catalytic Converter

Part Number: WLK-84802

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 10, 2025 if ordered today

Walker Exhaust Catalytic Converters 84719

CalCat CARB Catalytic Converter

Part Number: WLK-84719

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 10, 2025 if ordered today

Walker Tailpipes for 2009-2013 SIERRA 1500, SILVERADO 1500 - 55604

Tailpipe, Exhaust, Outside Diameter 2.750 in., Steel, Aluminized, Chevrolet, GMC, Each

Part Number: WLK-55604

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

...Loading

Estimated Ship Date: Dec 10, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

AP Exhaust Intermediate Pipes for 2009-2013 SIERRA 1500, SILVERADO 1500 - 54211

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025

...Loading

Page 1 of 1