GMC Mufflers

Mufflers, FlowFX, Oval Case, Stainless Steel, Natural, Dual 3.00 in. Center Inlet/Dual 3.00 in. Center Outlet, 24.000 in. Overall Length, Each

Part Number: FLO-72469

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Xlerator Performance, Steel, Aluminized, Chevy, GMC, 6.0, 8.1L, Each

Part Number: APH-X503

3.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Big Block 50 Series, Dual 3 in. Inlet/3 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-530513

4.43 out of 5 stars ( 23 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Super 50 Series, Dual 2 1/4 in. Inlet/ 3 in. Outlet, Steel, Black, Aluminized, Each

Part Number: FLO-524553

4.91 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Big Block II 70 Series, Dual 2 1/4 in. Inlet/3 in. Outlet, Steel, Black, Each

Part Number: FLO-524703

4.54 out of 5 stars ( 13 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Big Block 50 Series, Dual 2 3/4 in. Inlet/Dual 2 1/2 in. Outlet, Steel, Black, Each

Part Number: FLO-527504

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Quiet-Flow 3, 2 1/2 in. Inlet/3 in. Outlet, Steel, Aluminized, Chevy, GMC, Pickup, Each

Part Number: WLK-21533

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Xlerator Performance, Steel, Aluminized, Chevy, GMC, 6.0, 8.1L, Each

Part Number: APH-X504

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, SUV 50 Series, Dual 2 1/4 in. Inlet/ 3 in. Outlet, Stainless Steel, Black, Each

Part Number: FLO-8524553

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Muffler, Quiet-Flow 3, 2 1/2 in. Inlet/2 1/2 in. Outlet, Steel, Aluminized, Chevy, GMC, C/K-Series Pickup, Each

Part Number: WLK-21400

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Muffler, Xlerator Performance, Stainless Steel, Natural, Chevy, GMC, 5.7L, Each

Part Number: APH-XS2568

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Muffler, OE Replacement, Steel, Aluminized, Chevy, GMC, 4.8, 6.0L, Each

Part Number: APH-2579

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Mufflers, Quiet-Flow SS, Stainless Steel, Aluminized, 28.000 in. Overall Length, Cadillac, GMC, Hummer, Each

Part Number: WLK-21431

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

Mufflers, Direct-Fit SoundFX, Steel, Aluminized, 29.00 in. Overall Length, Chevrolet, GMC, Each

Part Number: WLK-18906

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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

Part Number: APH-2525

Not Yet Reviewed

Estimated Ship Date: Apr 9, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Mufflers-Quiet-Flow

Part Number: WLK-22307

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

Walker Quiet-Flow SS Muffler

Part Number: WLK-21437

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Muffler, Quiet-Flow 3, 2 in. Inlet/2 3/4 in. Outlet, Steel, Aluminized, Chevy, GMC, Each

Part Number: WLK-21291

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Muffler, School Bus, Round, Stainless Steel, Natural, 39.00 in. Overall Length, Each

Part Number: WLK-22566

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Muffler, Quiet-Flow 3, 3in. Inlet/2 3/4 in. Outlet, Steel, Aluminized, Chevy, GMC, Each

Part Number: WLK-21367

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Muffler Assembly - Quiet-FlowSS - Domestic - TK

Part Number: WLK-54888

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Mufflers, Direct Fit SoundFX, Steel, Aluminized, 29.000 in. Overall Length, Chevy, GMC, Each

Part Number: WLK-18824

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Special Order

Muffler, SoundFX, 2.000 in. Inlet/Outlet, Oval, Steel, Aluminized, Chevy, GMC, Cadillac, Each

Part Number: WLK-18985

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

• Drop Ship
• Special Order

Mufflers, Direct-Fit, 2.50 in. Dual Inlet, 3.00 in. Single Outlet, Steel, Aluminized, Oval Case, 28.00 in. Overall Length, Chevrolet, GMC, Each

Part Number: BRE-100-7217

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

• Free Shipping

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

Part Number: APH-2556

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order