Description

Fits

SKU	Inlet / Outlet Size	Configuration
M12774	4" ID	Center / Center
M12772	5" ID	Center / Center

If your exhaust sounds more like a hairdryer than a heavy-duty diesel, it’s time for an upgrade. These Mel's Manufacturing mufflers live up to the name in performance, sound, and quality. Engineered to deliver a deep, authoritative tone without sacrificing the high-flow performance your turbo needs, these units are built for the long haul with heavy-gauge stainless steel and fully welded joints.

The straight-through perforated core design minimizes backpressure, allowing your engine to breathe easier and keeping EGTs in check. Whether you're finishing a custom exhaust build or replacing a restrictive factory unit, these mufflers offer a "no-nonsense" solution for a safe, controlled sound. Plus, the reversible design makes installation a breeze regardless of your pipe orientation.

Part Number: M12774 / M12772

Features

Large-diameter mandrel-bent stainless steel core ensures maximum flow and reduced restriction.
Densely packed with sound-absorbing material designed to resist matting, meltdown, and blowout even under high EGTs.
A thick stainless steel mesh wrap protects the packing material and adds an extra layer of sound absorption.
Built with heavy-gauge stainless steel and all welded seams for maximum toughness and durability.
An increased number of smaller perforations eliminates blowout and maintains a deep-toned performance sound.

Includes

(1) 8" Round Stainless Steel Diesel Muffler

Notes

Design: Fully reversible for flexible installation.
Dimensions: 8" Round Body, 24" Body Length, 30" Overall Length.
Finish: Natural Stainless Steel.

2016-2019 Nissan Titan 5.0L Cummins Exhaust

Universal Diesel 30" Stainless Steel Muffler (M12774 & M12772)