Wehrli 03-07 Dodge 5.9L Cummins S400 Twin Turbo Kit (No Turbo) - Bengal Blue

Wehrli Custom Fabrication is well-known for building robust performance parts for diesel trucks. This twin turbo kit, designed for the 2003-2007 Dodge 5.9L Cummins, is built to handle serious power while improving your truck's overall performance. It's a great option if you're looking to increase horsepower, get better fuel mileage, and keep your Exhaust Gas Temperatures (EGTs) in check, all while maintaining a turbo spool that feels similar to stock.

This kit is designed to be paired with an S400-style turbocharger and your stock Holset turbo, or with an upgraded drop-in turbo for even more power. Depending on your turbo and fuel system choices, this setup is capable of supporting up to 1000 rear-wheel horsepower. The hot side components and downpipe feature a high-temperature black ceramic coating to help manage heat, and the kit includes stainless steel oil feed and drain lines. You'll also get a dry air filter with an Outerwear's pre-filter cover to keep dust out. The kit retains your passenger-side factory battery location, making installation a bit more straightforward. Everything you need for installation, including silicone boots, stainless T-bolt clamps, V-band clamps, heat wrap, and all necessary hardware, is included.

This kit is made in the USA and features a durable custom powder coat finish in Bengal Blue. It's a solid choice for daily driver work trucks and tow rigs that need more power without sacrificing too much low-end response. If you're aiming for higher horsepower numbers, Wehrli recommends specific turbocharger combinations and supporting modifications to achieve your goals.