Wehrli Custom Fabrication WCF100567-BB 2003-2007 5.9L Cummins S400/Stock Twin Turbo Kit Bengal Blue

The Wehrli Custom Fabrication S400/Stock Compound Turbo Kit is capable of up to 1000 RWHP, making it an excellent upgrade for 2003-2007 Dodge Ram trucks equipped with the 5.9L Cummins diesel engine. This kit is 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. The Bengal Blue powder coat finish provides a custom appearance that sets your truck apart.

Performance Applications:

• 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 - better top-end performance that sacrifices some low-end spool
• S480/63 or 64 Upgraded Drop-In Turbo: 900+ RWHP capable - improved top end power with moderate spool characteristics
• S480/67 Upgraded Drop-In Turbo: 1000+ RWHP capable - best top end power, ideal for manual transmission trucks

Kit Includes:

• 5-inch intake system with dry air filter and Outerwear's pre-filter cover
• Stainless steel oil feed and drain lines with fittings
• 4-inch turbo down pipe
• 3-inch turbo hot side crossover pipe
• 3-inch cold charge pipes
• S400 turbo pedestal and mounting hardware
• All necessary clamps and hardware for installation

Important Installation Notes:

• This kit is designed to be used with the OEM exhaust manifold
• Requires custom tuning for proper operation and performance
• Retains passenger-side factory battery location
• Turbocharger sold separately - kit includes all piping and installation components
• Gloss Black ships in 3-5 business days; other powder coat colors have 10-15 business day lead time

This compound turbo setup maintains the factory variable geometry turbo as the primary turbo while adding an atmospheric S400-based turbo, delivering exceptional performance gains while maintaining excellent drivability and towing capabilities. Bengal Blue powder coating is applied to all steel components for a show-quality custom finish.