Mufflers - 4.00 Inlet Diameter (in.) - Chambered Internal Construction

MBRP Quiet Tone Series Diesel High-Flow 409 Stainless Steel 4 Inch Muffler M1004S

Muffler, Quiet Tone Series Diesel High-Flow, Round, Stainless, 4 in. Center Inlet and Outlet, Each

Part Number: MBR-M1004S

3.5 out of 5 stars ( 10 )

Estimated Ship Date: Today

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MBRP Quiet Tone Series Diesel High-Flow Steel 4 Inch Muffler M1004A

Muffler, Quiet Tone Series, Round, Steel, Aluminized, 4 in. Center Inlet/Outlet, 30 in. Length, Each

Part Number: MBR-M1004A

4.8 out of 5 stars ( 20 )

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Flowmaster Delta Force 40 Series Race 409 Stainless Steel 4 Inch Muffler 854040-10

Muffler, Delta Force 40 Series Race, Oval, Stainless, Black, 4 in. Center Inlet/Outlet, 13 in. Case Length

Part Number: FLO-854040-10

5.0 out of 5 stars ( 6 )

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MBRP Quiet Tone Series Diesel High-Flow 304 Stainless Steel 4 Inch Muffler M1004

Muffler, Quiet Tone Series Diesel High-Flow, Round, Stainless, 4 in. Center Inlet and Outlet, Each

Part Number: MBR-M1004

5.0 out of 5 stars ( 1 )

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Flowmaster Delta Force 10 Series Steel 4 Inch Muffler 954010-12

Muffler, Delta Force One Chamber, 4 in. Inlet/4 in. Outlet, Steel, Black, Each

Part Number: FLO-954010-12

5.0 out of 5 stars ( 1 )

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Valvetronic Designs Valved Muffler Kits UVM.101MM.X1

Muffler, Valved Muffler, Oval, 4.00 in. Single Inlet, 4.00 in. Single Outlet, Stainless Steel, Polished, Kit

Part Number: VLD-S0642

Not Yet Reviewed

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XForce Varex 304 Stainless Steel 4 Inch Muffler VMK18-400

Muffler, Varex, Oval, 304 Stainless Steel, Brushed, 4.00 in. Center Inlet/Outlet, 24.50 in. Overall Length, Each

Part Number: XFO-VMK-18-400

3.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Walker Mega-Flow Steel 4 Inch Muffler 22965

Muffler, Mega-Flow, Round, Chambered, Steel, Aluminized, 4 in. Center Inlet and Outlet, 51 in. Length, Each

Part Number: WLK-22965

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Gibson Superflow 304 Stainless Steel 4 Inch Muffler 788040S

Gibson Superflow 304 Stainless Steel 4 Inch Muffler 788040S

Muffler, Superflow, 4.00 in. Inlet/4.00 in. Outlet, Stainless Steel, Polished, Each

Part Number: GIB-788040S

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

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Estimated Ship Date: Nov 30, 2026 if ordered today

Valvetronic Designs Valved Truck/SUV 304 Stainless Steel 4 Inch Muffler OFF.UVM.101MM.X1

Muffler, Truck/SUV Valved Muffler, Oval, 4.00 in. Single Inlet, 4.00 in. Single Outlet, Stainless Steel, Polished, Kit

Part Number: VLD-S0640

Not Yet Reviewed

Estimated Ship Date: Nov 16, 2026 if ordered today

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Estimated Ship Date: Nov 16, 2026 if ordered today

MBRP XP Series 409 Stainless Steel 4 Inch Muffler MK96116

High-Flow Muffler Assembly, T409 2004.5-2005 Dodge Cummins 600/610 (fits to stock only)

Part Number: MBR-MK96116

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 28, 2026 if ordered today

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Estimated Ship Date: Dec 28, 2026 if ordered today