The Wehrli S400/stock compound twin-turbo kit for 2003–2007 Dodge Ram 5.9L Cummins provides a twin-turbo solution offering high RWHP potential depending on turbo and fueling choices. Suitable for daily drivers, work trucks and tow rigs, the kit improves power delivery, fuel mileage and EGT control while preserving usable turbo spool with recommended combinations. It includes ceramic-coated hot-side and down pipes, stainless oil feed and drain lines, 3" cold charge plumbing, silicone boots, clamps, hardware, heat wrap, V-band clamps and a durable powder-coated finish with a 5" intake.
Wehrli Custom Fab Twin Turbo Kit S400/Stock, for 2003-2007 Cummins 5.9L, WCFab Grey
Features & Benefits
High Temp Black Ceramic Coating on Hot Side and Down Pipe
Stainless Steel Oil Feed and Drain Lines with Fittings
Dry Air filter with Outerwear's Pre-Filter Cover
Retains passenger-side factory battery location
Silicone Boots & Stainless T-Bolt Clamps
3" Cold Charge Pipe Between Turbos
3" Turbo Hot Side Cross Over Pipe
Durable Custom Powder Coat Finish
Installation Hardware Included
4" Turbo Down Pipe
Heat Wrap & Clamps
V-Band Clamps
O-ring seals
Made in USA
5" Intake
Manufacturer Description
2003-2007 5.9L Cummins S400/Stock Compound Turbo Kit. 1000 RWHP capable, depending upon turbo and fuel system modifications. Recommended for daily driver work trucks and tow rigs looking for increased horsepower, better fuel mileage, and superior EGT control with stock-like turbo spool characteristics. Recommended Combinations - S475 / Stock Holset Turbo - Up to 750 RWHP with Supporting Modifications - Best Turbo Spool, performs well on stock fuel setups. S480 / Stock Holset Turbo - 800+ RWHP Capable with Supporting Modifications - A better top-end performance that sacrifices a bit of spool on the lower end when compared to an S475/stock setup. S480 / 63 or 64 Upgraded Drop-In Turbo - 900+ RWHP Capable with Supporting Modifications - Improved top end power with moderate spool characteristics S480 / 67 Upgraded Drop-In Turbo - 1000+ RWHP Capable with Supporting Modifications - Best Top End Power, sacrifices low-end power and turbo spool - Manual trans trucks will allow best use of power band for this setup. The S480 / 67 upgraded drop-in setup is not recommended for tow rigs due to spool characteristics. Not sure which kit is right for you? Give us a call to discuss your build.
