1998-2009 Cummins/Duramax Stainless Steel Muffler 4" Inlet & Outlet (53801)

Fits

Monster Exhaust Benefits. Replacing the restrictive stock muffler with Bank's free-flowing Monster muffler makes a huge difference in airflow, sound and performance. The Banks muffler has a large inlet and outlet. And in between, the exhaust flows straight through, instead of torturously winding its way back and forth inside hairpin chambers and building up back-pressure. And only Banks Monster muffler has an expansion chamber to alleviate the nasty drone that other straight-through mufflers are known for. Banks utilizes durable ceramic packing with a high temp rating so it won't degrade like fibreglass. Add it all together and you get a muffler that flows over three times better than stock and delivers a pleasing, throaty rumble!

Part Number: 53801

• Superior Flow and Rich, Throaty Sound
• Straight-through flow path
• Exclusive expansion chamber dissipates annoying mid-range drone
• Flows up to 201 percent better than stock
• Authoritative, but never overpowering, exhaust sound
• Polished-stainless steel
• 4-inch inlet x 4-inch outlet