MBRP S60360409 5 Inch Filter Back Exhaust

MBRP S60360409 5 Inch Filter Back Exhaust for 2011–2019 Duramax

The MBRP S60360409 5-inch filter back exhaust fits 2011–2019 Duramax LML and L5P trucks. This system replaces the exhaust behind the filter and improves flow while maintaining emissions components.

Because it removes restrictive factory piping, the system allows exhaust gases to move more efficiently.

Filter Back System Design

This filter back system installs after the DPF. Therefore, it keeps factory emissions equipment in place while improving exhaust flow and sound.

As a result, you gain better efficiency without modifying emissions components.

T409 Stainless Steel Construction

MBRP builds the S60360409 using T409 stainless steel. This material resists corrosion better than aluminized steel while keeping costs reasonable.

In addition, it handles harsh weather and road conditions with long-term durability.

Improved Exhaust Flow and Sound

The larger 5-inch diameter reduces restriction compared to the factory system. Because of that, exhaust gases exit faster and more smoothly.

You can expect:

• Reduced exhaust restriction
• Deeper exhaust tone
• Improved overall flow

Single Side Exit with Premium Tip

This system features a single side exit design for a clean, factory-style layout. It also includes a 6-inch T304 stainless steel tip, which adds durability and a finished look.

Built for Fit and Reliability

MBRP uses welded hangers to keep the system secure. Therefore, the exhaust stays aligned and stable during driving.

Additionally, the system fits using factory mounting points, which simplifies installation.

Installation Notes

This exhaust installs as a direct fit with no major modifications required. However, always verify compatibility with your specific truck before installation.

Warranty Coverage

MBRP backs the Armor Plus series with a lifetime warranty on T409 stainless steel systems. This coverage protects against defects in materials and workmanship.

Fitment

• 2011–2016 Duramax LML 6.6L
• 2017–2019 Duramax L5P 6.6L

Related Parts (Same Platform)

Browse more Duramax upgrades:
https://reviewdiesel.com/product-category/duramax-performance/
https://reviewdiesel.com/pc/duramax/2017-2019-duramax-l5p-parts-accessories/

Built for Long-Term Performance

Factory exhaust systems restrict flow and limit sound. The MBRP S60360409 improves both while maintaining emissions compliance and long-term durability.