Universal 4-Inch, Armor Lite, High Flow Muffler, M20681

MBRP M20681 is a universal, high-flow 4″ aluminized steel muffler designed for diesel and heavy-duty gas applications that use 4″ exhaust. It features a straight-through, perforated-core design for flow, a 6″ case diameter, and a 30″ overall length—ideal for deep tone without excessive drone.

• Material: Aluminized steel (Armor Lite)
• Inlet/Outlet: 4″ (center/center)
• Body Diameter: 6″
• Body Length: ~15.75″
• Overall Length: 30″
• Core Type: Straight-through, perforated
• Universal replacement for many 30″ overall 4″ mufflers

Fitment

Universal 4″ inline muffler for trucks and custom builds using 4″ exhaust tubing. Common on Dodge/Ram Cummins turbo-back and filter-back systems, as well as other diesel platforms. Verify dimensions and hanger locations for your specific setup.