Pay in 4 interest-free payments of $91.25 Learn more
Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
Important Note: This exhaust system ONLY fits models equipped with the OEM style 3-bolt flange on the turbo direct pipe
OEM-grade coolant reroute hose
Forget weak factory settings—these tunes are built for serious Duramax owners who demand real performance
optimized transmission tuning ensures power is delivered efficiently and effectively
GDP Downpipe Back Exhaust - Single (2011-2015 GM 2500/3500 6.6L Duramax LML) dieselr_signature Important Note: This exhaust systemBuilt to Last: Constructed from heavy duty T409 stainless steel for maximum durability. Mandrel bent for a perfect fit and improved airflow. Improved flanges ensure a leak free connection. Effortless Installation: Includes clamps, pre welded contour bent hangers, and strong flanges for a hassle free installation. Performance Gains: Expect increased horsepower, lower Exhaust Gas Temperatures (EGTs), and improved airflow. Unleash your truck's potential
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