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Walker Heavy-Duty Mufflers

4.29 out of 5 stars 28 Customer Reviews

Walker offers a complete lineup of exhaust products for today's heavy-duty and commercial vehicles, including these heavy-duty mufflers. They're engineered to reduce in-cab and exterior engine noise, and feature an all-welded construction from heavy-gauge, all-aluminized steel. Their re-metallized seams provide additional corrosion resistance, improving appearance and durability. They come in a range of styles and sizes, to serve as an economical replacement for your worn or damaged original equipment.

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Walker Heavy-Duty Steel 4 Inch Muffler 21172

Muffler, Heavy Duty, 4 in. Inlet/4 in. Outlet, Stainless Steel, Each

Part Number: WLK-21172

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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