Exhaust Adapters will help your 2016-2022 Chevy 2.8L Duramax add the larger tip onto your stock exhaust. Y-pipes and exhaust reducers typically start at 3.5" and go all the way to 7" in diameter so that they can be used in a wide variety of applications. These adapters are constructed from aluminized and stainless steel to ensure they match your existing application and exhaust system. Find high-quality products and components from MBRP, Magnaflow, and Silverline.