4" inch Filter Back Dual Outlet Single Side Aluminized Steel

Features:

• Fits 2011–2019 6.6L Duramax LML and L5P
• 4-inch filter-back exhaust system design
• Constructed from aluminized steel for durability
• Dual outlet with single side exit configuration
• Improves exhaust flow and reduces backpressure
• Delivers deeper, aggressive exhaust tone
• Helps lower exhaust gas temperatures
• Enhances throttle response and performance
• Bolt-on installation with no cutting required
• Compatible with factory emissions equipment
• Budget-friendly alternative to stainless systems

Turn Heads With Performance Sound And Clean Looks

If you’re ready to give your Duramax a voice and some added performance, the MBRP S6033AL 4-Inch Filter-Back Dual Outlet Exhaust is a smart, affordable way to do it. This system gives your 2011–2019 Silverado or Sierra HD a deeper, more aggressive tone that turns heads without overwhelming the cab. It’s built to improve exhaust flow and reduce backpressure, which means better throttle response and cooler operating temps during towing or highway pulls. The dual outlet with single side exit adds a clean, sporty look behind the rear tire, giving your truck a touch of custom style. Built from aluminized steel, this system offers reliable performance at a wallet-friendly price, making it perfect for truck owners who want results without going full stainless. Installation is a breeze with a bolt-on design that uses your existing hangers, no cutting or welding required. If you want better sound, sharper looks, and a noticeable performance bump, this MBRP kit delivers right out of the box.

Designed To Maximize Flow And Withstand Daily Use

The MBRP S6033AL Filter-Back Exhaust System is engineered specifically for 2011–2019 6.6L Duramax-equipped Silverado and Sierra 2500HD/3500HD models and offers measurable performance and efficiency improvements. With a 4-inch mandrel-bent design, this system reduces exhaust restriction and backpressure, helping your turbo spool more efficiently while keeping exhaust gas temperatures in check. The aluminized steel construction provides solid resistance to heat and road wear, making it a great option for everyday use in various climates. The system exits as a dual outlet on one side, which balances performance gains with a factory-style look and simple fitment. It features MBRP’s flow-through muffler, originally developed for high-output marine engines, delivering a deep, mellow tone that doesn’t drone. This kit installs with basic hand tools and reuses the factory mounting points, making it an easy upgrade without extensive modifications. For truck owners looking to improve flow, reduce temps, and add sound without breaking the bank, this MBRP system checks all the right boxes.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Fits 2011–2019 GM Silverado and Sierra 2500HD/3500HD 6.6L Duramax
• Filter-back system retains factory emissions components
• Aluminized steel offers a cost-effective alternative to stainless
• Dual outlet single side exit for clean appearance
• 4-inch mandrel-bent tubing improves exhaust flow
• Delivers a deeper, mellow exhaust tone
• Helps reduce backpressure and lower EGTs
• Includes flow-through muffler designed for marine-grade performance
• Bolt-on installation with no cutting or welding required
• Designed for diesel truck enthusiasts seeking performance and sound