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25" thick-walled Hi-Silicon ductile casting
Engineered for a perfect fit over the factory 2021+ Duramax diesel exhaust pipe
PPE’s Transmission Cooler Kit features a simple bolt-on installation and is covered by our limited lifetime warranty
reducing the chances of thread failure even under extreme stress
2015.5-2016 Duramax LML 3" Turbo Downpipe (GM8428) 2019 - 2022 Dodge Air Intake & Accessories 25" thick-walled Hi-Silicon ductile castingThe MBRP GM8428 3" Downpipe helps your 2015 2016 6. 6L LML breath by increasing the exhaust flow off your turbocharger. Removing the restrictions caused by your OEM downpipe the MBRP replacement will lower your EGTs and increase performance. The install process is as simple as it gets from the precision bending that you'd expect from an MBRP kit. 3" Turbo Downpipe Aluminized FITS 2011 2015 GMC Duramax 6. 6L LMM