Uppipe replacement
It's a perfect fit and dimpled just right for my 3 inch downpipe

Key Features & Specs:
Fitment:
The Wehrli WCF100654 Passenger Side Up Pipe is a premium upgrade designed for 2001-2004 LB7 Duramax engines running a single turbo setup. Constructed from high-quality stainless steel, this 2-inch up pipe delivers improved durability and exhaust flow compared to factory components. Engineered for seamless compatibility, it fits both OEM and Wehrli billet exhaust manifolds, making it an ideal solution for performance builds or reliable replacements. This kit includes two gaskets for a secure, leak-free installation and is proudly made in the USA to ensure top-tier craftsmanship and long-lasting performance.