Wehrli Custom 2003-2007 5.9L Cummins S400/S400 Side by Side Twin (Compound) Turbo Kit

S400/S400 Cummins Side by Side Style Custom Twin (Compound) Turbo Kit. 1100+ RWHP capable. Recommended for highly modified trucks with upgraded fuel systems, built engines and built transmissions seeking big HP numbers and maximum performance capability.

Recommended Combinations:

S463.5/S480 - 900+ RWHP with Supporting Modifications - for hot rod trucks that see daily driving with some hauling and light to medium towing. 

S467/S480 - 1100+ RWHP with Supporting Modification - for high performance trucks that are raced on the weekends and see spirited / occasional daily driving use and infrequent light towing.

Still not enough? Have a pressing need a drag racing or pulling setup set on kill? Give us a call at 630-277-8239 to speak with one of our specialists about building a custom combination that will work best for your needs!

If you own a mild/lightly modified truck and are seeking the benefits of a compound turbo setup for frequent medium to heavy towing and with no plans to upgrade the fuel system further, please check out our S400/Stock Twin (Compound) Turbo Kit options.

***Designed to be used with 2nd Gen Style Stainless Diesel or Steed Speed Exhaust Manifold in the high mount turbo position (angled T4 exhaust flange facing upwards). If you are not purchasing the turbos and manifold from us, you MUST specify the brand and model / part number of the turbos and manifold you want to use at checkout. Some brands and models may require that the parts be sent in to us for the kit to be built to ensure proper compatibility and fitment.

***NOTE: Not compatible with T4 S400 SXE frame chargers featuring a 'race style' compressor cover.

***NOTE: This kit is intended for use with OEM or OEM like intercoolers. It is NOT compatible with Banks Power Intercoolers as configured! If you already have or plan to run a Banks Intercooler, please contact one of our sales specialists by phone for assistance placing your order.

***NOTE: Requires relocation or removal of passenger side battery.