The PPE/Mbrp 3" Stainless Steel Downpipe is a durable and high-quality replacement for the stock downpipe in your 2015.5-2016 GM 6.6L Duramax LML. Made from long-lasting 304 stainless steel, it provides improved performance and eliminates the risk of a crushed oval downpipe. Upgrade your vehicle with this essential part today.