GMC SIERRA 3500 HD Mufflers

Muffler, Super 40 Series Delta Flow, Oval, Stainless, Black, 3.5 in. Offset Inlet/Outlet, Chevy, Ford, Ram

Part Number: FLO-853548

4.43 out of 5 stars ( 14 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Muffler, FlowFX, 3.50 in. Inlet, 3.50 in. Outlet, 409 Stainless Steel, Natural, Center Inlet, Center Outlet, Chevy, GMC, 6.6L/401 Engine, Each

Part Number: FLO-718155

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Muffler, Ultra Flo Welded, Oval, 4 in. Inlet/4 in. Outlet, Stainless Steel, Chevy, GMC/Hummer, Each

Part Number: WLK-17557

3.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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• $10 Summit Bucks

Muffler - Quiet-FlowSS - Domestic - TK

Part Number: WLK-21706

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Muffler, Quiet-Flow, Round, Steel, Aluminized, Chevy, GMC, Each

Part Number: WLK-21753

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Mufflers, Muffler - CHALLENGE

Part Number: APH-2644

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Muffler, OE Replacement, Steel, Aluminized, Chevy, GMC, 6.0, 8.1L, Each

Part Number: APH-2525

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Estimated Ship Date: May 6, 2026 if ordered today

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Mufflers, Direct-Fit, 3.50 in. Inlet/Outlet, Steel, Aluminized, Oval Case, 31.00 in. Overall Length, Chevrolet, GMC, Each

Part Number: BRE-100-7279

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Estimated Ship Date: May 12, 2026 if ordered today

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Walker Quiet-Flow SS Muffler

Part Number: WLK-21616

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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