4” Diesel Universal Muffler

Description

4″ Universal diesel exhaustmMuffler (T409 Stainless Steel)

This 4 inch diesel muffler is built for trucks running full 4″ exhaust systems where you need to control sound without restricting flow. Unlike chambered designs, this 4 inch muffler keeps a straight-through core, making it a solid choice for performance builds and daily-driven setups.

If you’re looking for a 4 inch muffler for diesel applications that won’t choke your system, this unit keeps exhaust velocity consistent while smoothing out harsh tone.

What this muffler does

A 4″ muffler like this helps reduce rasp and sharp exhaust crack without introducing backpressure. It’s commonly used on trucks running delete pipes or full aftermarket exhaust systems where a straight pipe is too loud but performance still matters.

Construction & specifications

• Diameter — 4″ inlet / outlet (true full-bore design)

• Material — T409 stainless steel

• Design — Straight-through internal core (no restriction plates)

• Finish — Raw, unpolished surface

• Type — Universal 4″ diesel muffler

What’s included

• 4″ diesel exhaust muffler (T409 stainless)

• Complete mounting and installation hardware

Vehicle compatibility

This 4 inch muffler fits diesel truck equipped with a 4-inch exhaust system.

Dodge Ram / Ram Cummins

• 2007–2009 – 6.7L Cummins (Pickup Truck, Cab & Chassis)
• 2010–2012 – 6.7L Cummins (2500 / 3500 / 4500 / 5500, Pickup & Cab & Chassis)
• 2013–2018 – 6.7L Cummins (2500 / 3500 Pickup)
• 2019–2024 – 6.7L Cummins (2500 / 3500 / 4500 / 5500, Pickup & Cab & Chassis)

Ford Powerstroke

• 1999–2003 – 7.3L Powerstroke (Pickup Truck, Cab & Chassis)
• 2003–2007 – 6.0L Powerstroke (Pickup Truck, Cab & Chassis)
• 2008–2010 – 6.4L Powerstroke (Pickup Truck)
• 2011–2025 – 6.7L Powerstroke (Pickup Truck)

GM / Chevy / GMC Duramax 6.6L

• 2004–2007 – Duramax LLY / LBZ
• 2007–2010 – Duramax LMM
• 2011–2016 – Duramax LML
• 2017–2023 – Duramax L5P
• Pickup Truck

Nissan

• • 2016–2019 – Titan XD 5.0L Cummins

Benefits & Features

• Maintains true 4″ exhaust diameter across the muffler section

• Reduces harsh tone compared to a straight pipe

• Straight-through design keeps exhaust flow unrestricted

• Helps minimize drone under load and highway driving

• T409 stainless resists heat cycling and corrosion

• Ideal 4″ muffler for diesel performance exhaust systems