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Exhaust Kits | 2011-2016 GM 6.6 Duramax LML

With the release of the LML Duramax in 2011 model year applications came an entirely new exhaust system for GM. This factory system starts out at 3.5" diameter out of the turbo and features a catalyti ... read more

MBRP Smokers 4" Single Stack Bed Kit MBRP-UT4001 18.00 MBRP Smokers 4" Single Stack Bed Kit MBRP Exhaust UT4001 Diesel Power Products carries the MBRP Single Stack Bed Kit - Universal UT4001 / UT3001 MBRP Armor Series 5" DPF-Back Single Exhaust System 11-19 GM 6.6L Duramax LML / L5P MBRP-S60360-Main 0.00 MBRP Armor Series 5" DPF-Back Single Exhaust System 11-19 GM 6.6L Duramax LML / L5P MBRP Exhaust S60360AL This 5" MBRP DPF-Back Exhaust will look great, sound great and reduce backpressure on the turbo to lower EGT temperatures. MBRP Armor Lite 4" DPF-Back Single Exhaust System 11-19 GM 6.6L LML / L5P GM Duramax MBRP-S6032AL 43.00 MBRP Armor Lite 4" DPF-Back Single Exhaust System 11-19 GM 6.6L LML / L5P GM Duramax MBRP Exhaust S6032AL This 4" MBRP DPF-Back Exhaust will look great, sound great and reduce backpressure on the turbo to lower EGT temperatures. Diamond Eye 4" DPF Back Exhaust 11-15 LML Duramax DE-K4156-Main 0.00 Diamond Eye 4" DPF Back Exhaust 11-15 LML Duramax Diamond Eye Performance K4156A Diesel Power Products carries the Diamond Eye 4" DPF Back Exhaust for 11-15 LML Duramax Diamond Eye 5" DPF Back Exhaust 11-15 LML 6.6L GM Duramax DE-K5162-Main 0.00 Diamond Eye 5" DPF Back Exhaust 11-15 LML 6.6L GM Duramax Diamond Eye Performance K5162A Diesel Power Products carries Diamond Eye 5" DPF Back Exhaust for 11-15 LML 6.6L GM Duramax AFE ATLAS 5" Aluminized DPF Back Exhaust 11-16 GM 6.6L Duramax LML AFE-49-04041-Main 0.00 AFE ATLAS 5" Aluminized DPF Back Exhaust 11-16 GM 6.6L Duramax LML AFE 49-04041 Power Products carries the AFE 5" DPF Back Atlas Series Exhaust for 11-16 6.6L LML GM Duramax AFE MACH Force XP 5" Stainless DPF Back Exhaust 11-16 GM 6.6L Duramax LML AFE-49-44041-Main 0.00 AFE MACH Force XP 5" Stainless DPF Back Exhaust 11-16 GM 6.6L Duramax LML AFE 49-44041 Power Products carries the AFE 5" DPF Back Mach Force XP Series Exhaust for 11-15 LML GM Duramax MBRP Armor BLK Series 4" DPF Back Exhaust System 11-19 GM 6.6L Duramax LML / L5P MBRP-S6032BLK 37.00 MBRP Armor BLK Series 4" DPF Back Exhaust System 11-19 GM 6.6L Duramax LML / L5P MBRP Exhaust S6032BLK Get the sound and style you're after, in MBRP's new Black Series Exhaust for your LML or L5P! MBRP Armor Lite 4" DPF Back Dual Outlet Single Side Exhaust System 11-19 GM 6.6L Duramax LML / L5P MBRP-S6033AL 46.00 MBRP Armor Lite 4" DPF Back Dual Outlet Single Side Exhaust System 11-19 GM 6.6L Duramax LML / L5P MBRP Exhaust S6033AL Mount up an MBRP Dual Outlet exhaust on your LML or L5P for increased sound, performance, and styling! Diamond Eye 4" DPF Back Dual Exhaust 11-15 6.6L GM Duramax LML DE-K4163A-main 0.00 Diamond Eye 4" DPF Back Dual Exhaust 11-15 6.6L GM Duramax LML Diamond Eye Performance K4163A Give your Duramax LML a boost of power with this 4" dual exhaust system from Diamond Eye Performance, the DPF back exhaust means better airflow and more power! Diamond Eye 4" DPF Back Exhaust 16-17 6.6L GM Duramax LML / L5P DE-K4166A-main 0.00 Diamond Eye 4" DPF Back Exhaust 16-17 6.6L GM Duramax LML / L5P Diamond Eye Performance K4166A Increase your fuel economy, power, and reduce EGT's all while staying emissions compliant with this DPF (Diesel Particulate Filter) back exhaust kit from Diamond Eye for your Duramax. Diamond Eye 4" DPF Back Dual Exhaust 16-17 6.6L GM Duramax LML / L5P DE-K4168A-main 0.00 Diamond Eye 4" DPF Back Dual Exhaust 16-17 6.6L GM Duramax LML / L5P Diamond Eye Performance K4168A Give your 2016-17 Duramax a boost of power with this 4" dual exhaust system from Diamond Eye Performance, the DPF back exhaust means better airflow and more power!

With the release of the LML Duramax in 2011 model year applications came an entirely new exhaust system for GM. This factory system starts out at 3.5" diameter out of the turbo and features a catalytic converter, followed by a DOC (Diesel Oxidation Catalyst), a DPF (Diesel Particulate Filter), and a DEF (Diesel Emissions Fluid) system. Once the exhaust exits the last emissions device, the diameter is enlarged to a 4" diameter. The previous LMM engines featured a similar exhaust system, but without the addition of the DEF, which is designed to further aid in the emissions cleaning process. If you're looking to improve upon the power and efficiency of your Duramax, we can help you upgrade your exhaust with a higher flowing 4" or 5" system built from aluminized or stainless steel in single or dual outlet, or even stacks! We carry exhaust systems from AFE, Diamond Eye, MBRP, Magnaflow, Mel's Manufacturing, and Silverline.
You can either search by manufacturer by selecting one of the categories, or view our complete selection below. If you’re having trouble determining the best route for your exhaust system or components, feel free to give us a call or send an e-mail to [email protected] and we’d be happy to steer you in the right direction.

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