ProFab Performance Cast Flow series Manifolds and 2" Stainless Steel up pipes for 2001-2004 Duramax. Passenger side up pipe is built to clear a conventional down pipe on single turbo applications. If you have Twin Turbo's, you want to purchase the Extreme Cast Flow Kit.
Reviewed by: Justin05/01/2019 06:51PM
Product ownership: Less than 3 months
Purchased from: Wehrli Custom Fabrication - WCFab
Great product ! Changed the tone of my truck so much! Sounds so much better ! Along with the up-pipes !