Wehrli 01-04 Chevrolet 6.6L LB7 Duramax S300 Turbo Install Kit (No Turbo) - Bengal Blue

If you're looking to upgrade your 2001-2004 Chevrolet Silverado 2500 HD or 3500 with the 6.6L LB7 Duramax engine, this S300 turbo install kit from Wehrli Custom Fabrication is designed to help you swap your stock IHI turbo for a larger Borg Warner S300 frame unit. This kit focuses on improving the airflow path into and out of your engine, which is crucial for making more power and increasing efficiency. It's a comprehensive package that replaces many of the restrictive stock components with well-built, high-flow alternatives.

This kit includes a fabricated aluminum intake system with a 4-inch diameter, a heavy-duty sheet metal air box, and a high-performance dry air filter with a pre-filter cover. You also get updated 3-inch diameter mandrel-bent aluminum charge pipes for both the intercooler hot and cold sides. A key component is the upgraded 3-inch fabricated billet Y-bridge, which replaces the stock upper intake manifold to further enhance airflow. The oil feed and drain lines are made from high-quality stainless steel braided Parker lines, with the feed line routing directly from the engine block's main oil galley. The kit also features a high-temperature ceramic-coated turbo downpipe that connects to your existing exhaust system using a V-band clamp, meaning no cutting or modifications are needed for your exhaust. To make installation easier, it includes a driver-side transmission dipstick tube relocation.

This kit is designed to work with a T4 flange pedestal, which is compatible with 2-inch high-flow stainless steel up-pipes. Remember, this kit does not include the turbocharger itself; you'll need to source a compatible S300 turbo separately. If you're not purchasing a turbo from Wehrli, be sure to provide the details of your chosen turbo so they can ensure proper fitment. The kit comes in a striking Bengal Blue custom powder coat finish.