Wehrli 04.5-07 Dodge 5.9L Cummins S400 Turbo 2nd Gen Swap Kit (No Turbo/Manifold) - WCFab Grey

If you're looking to upgrade the turbo on your 2003-2007 Dodge 5.9L Cummins, this S400 turbo swap kit from Wehrli Custom Fabrication is designed to make that happen. This kit is specifically for installing an S400-based turbocharger when you're using a 2nd Gen style exhaust manifold, which you'll need to source separately. It's a popular upgrade for Cummins owners wanting more airflow and improved performance from their truck.

Wehrli builds these kits by hand in the USA, ensuring each component is carefully TIG welded and test-fitted on an engine to confirm proper fitment before it ships out. The mating flanges are CNC machined and include O-ring seals to create a boost-leak-free connection. This kit mounts the turbo high, which simplifies the downpipe installation. The included 4-inch downpipe connects directly to your existing exhaust system's V-band flange, meaning you won't have to cut your exhaust to get it installed. You also get a one-piece 3-inch hot-side intercooler pipe, an oil feed and drain line assembly, and a 5-inch intake with a dry air filter and an Outerwear's pre-filter cover for added protection.

This kit comes in a durable WCFab Grey powder coat finish. Remember, this kit does not include the S400 turbocharger or the 2nd Gen exhaust manifold, so you'll need to purchase those separately. If you're using a turbo or manifold from a brand other than WCFab, be sure to specify that when ordering, as some brands may require you to send in your parts for custom fitting.