Mufflers

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

Part Number: MBR-M1004A

4.79 out of 5 stars ( 19 )

Estimated Ship Date: Today

• Free Shipping

Muffler, Ultra Flo Welded, 4 in. Inlet/4 in. Outlet, Stainless Steel, Each

Part Number: WLK-17537

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Today

• Free Shipping

Muffler, Race Bullet, 4 in. Inlet/4 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-24217

4.83 out of 5 stars ( 18 )

Estimated Ship Date: Today

Muffler, Quiet-Flow SS, Oval, Offset/Offset, Stainless Steel, Natural, Dodge, Each

Part Number: WLK-54637

4.52 out of 5 stars ( 21 )

Estimated Ship Date: Today

• Free Shipping

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

Part Number: WLK-22572

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

Muffler, Heavy-Duty, 4.00 in. Center Inlet/Outlet, 51.50 in. Overall Length, Steel, Aluminized, Each

Part Number: WLK-22916

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• Free Shipping

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: Today

Muffler, Maximum Flow, 4 in. Inlet/4 in. Outlet, 14 in. Case Length, Steel, Aluminized, Each

Part Number: HOK-21609HKR

4.36 out of 5 stars ( 14 )

Estimated Ship Date: Today

• Free Shipping

Walker Heavy Duty Muffler

Part Number: WLK-22664

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Muffler, 4.00 in. Center Inlet, 4.00 in. Center Outlet, 30.00 in. Overall length, Round, Aluminized Steel, Universal, Each

Part Number: MBR-M20681

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Muffler, Replacement, 4 in. Inlet/4 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-22958

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

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

Part Number: WLK-17557

3.17 out of 5 stars ( 6 )

Estimated Ship Date: Today

• Free Shipping

Muffler, Ultra Flo Welded, 4 in. Inlet/4 in. Outlet, Stainless Steel, Each

Part Number: WLK-17225

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

• Free Shipping

Mufflers, Heavy-Duty, Steel, Aluminized, 39.000 in. Overall Length, Blue Bird, Chevy, GMC, Each

Part Number: WLK-22643

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Mufflers, Heavy-Duty, Steel, Aluminized, 40.000 in. Overall Length, Mack, Each

Part Number: WLK-21838

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

Muffler, Heavy-Duty, Oval, Steel, Aluminized, 4.00 in. Offset Inlet/Outlet, 34.00 in. Overall Length, Each

Part Number: WLK-22004

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 21, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Muffler, School Bus, 3 1/2 in. Inlet/4 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-22551

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 19, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Walker Heavy Duty Muffler

Part Number: WLK-22936

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

• Drop Ship
• Oversize $7.99
• Special Order

Muffler, TruckEx, Steel, Aluminized, Blue Bird, Each

Part Number: APH-3666

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

• Drop Ship
• Oversize $7.99
• Special Order

Muffler, TruckEx, Steel, Aluminized, Blue Bird, L6, Each

Part Number: APH-3891

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Drop Ship
• Oversize $7.99
• Special Order

Muffler, Replacement, 3 1/2 in. Inlet/4 in. Outlet, Steel, Aluminized, Each

Part Number: WLK-22604

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Drop Ship
• Oversize $7.99
• Special Order

Muffler, OE Replacement, Steel, Aluminized, Dodge, 5.9L, Diesel, Each

Part Number: APH-2519

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Walker Heavy Duty Muffler

Part Number: WLK-22642

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Walker Heavy Duty Muffler

Part Number: WLK-22899

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order