Wehrli Custom Fabrication WCF100570-BR Duramax Twin Turbo Kit Bengal - LB7 S400/Stock Red

The Wehrli Custom Fabrication WCF100570-BR is a high-performance S400/Stock twin compound turbo kit engineered specifically for 2001-2004 LB7 Duramax engines, featuring a distinctive Bengal Red powder coat finish. This comprehensive kit is capable of reaching up to 1000 RWHP depending on turbo and fuel system modifications, making it ideal for daily drivers, work trucks, and tow rigs seeking increased horsepower, improved fuel efficiency, and superior exhaust gas temperature (EGT) control while maintaining stock-like turbo spool characteristics.

Complete Kit Includes:

• 5-inch intake with dry air filter and Outerwears pre-filter cover
• 3.5-inch cold side charge pipe and turbo inlet horn
• 3-inch one piece Y-bridge with HD bead roll end
• 3-inch cold side intercooler pipe with 14-gauge aluminum construction
• 3-inch steel turbo hot side crossover pipe and 4-inch steel turbo down pipe
• Atmosphere turbo pedestal with built-in oil return fitting
• Coolant overflow tank with hoses, fittings, and low coolant sensor
• Stainless steel oil feed and drain lines with fittings
• Silicone boots, T-bolt clamps, V-band clamps, heat wrap and clamps
• High temp black ceramic coating on hot side pipes
• Bengal Red powder coating on aluminum components

Performance Options:

• S475 paired with stock IHI turbo achieves up to 750 RWHP with excellent turbo spool and performance on stock fuel setups
• S480 with stock IHI turbo reaches 800+ RWHP with enhanced top-end performance
• S480 with Stealth 64 drop-in turbo can deliver 900+ RWHP with improved top-end power

Compound turbo kits for the LB7 Duramax have become one of the most popular upgrades for daily drivers and towing rigs, proven to provide cooler EGTs and increased power across the rpm range, all while allowing use of the factory turbine brake feature. Every WCFab turbo kit is hand-built in-house by experienced fabricators and welders, with every component built and test-fit on jigs to ensure proper fitment, featuring TIG welded tubing and CNC machined mating flanges with O-ring seals for a boost-leak free setup. Gloss Black is in stock and ships in 3-5 business days, with 10-15 business day lead time on other colors like Bengal Red.

Note: This product cannot ship to the state of California. Kit does not include turbocharger - turbo must be purchased separately or specified. Requires removal or relocation of passenger side battery to accommodate turbo setup.