• Wehrli Custom Fab 03-07 5.9 Cummins S400 over Stock Twin kit


    Available for '03-07 5.9 Cummin's Trucks this kit Mounts an S400 Turbo in cojuction with the Factory Turbo charger. This setup offers the best overall Driving characterstics possible with no loss in spool up time and Overall boost reaching 60+ PSI. We have Dyno tested this setup on Calibrated Powers Dyno with Results exceeding 850Hp with Upgraded Fuel System and Ported Wastegate on the factory Turbo. 

    This kit is Bolt on to the factory Turbo on the Factory Manifold. For Trucks used in Dedicated Towing Applications we Recommend upgrading to the 1.10 AR exhaust housing which will aid in spool up characteristics of the s400. For setups with larger injectors and pump we stick with the 1.32 AR housing. 

    Kit Includes:

    • Hot pipe from stock charger to 400, High Temp Coated
    • 4" Downpipe, High Temp Coated
    • Cold Charge Pipe between Turbos
    • Stainless Braided Oil feed and drain Lines
    • 5" Intake with AFE Air filter
    • Necessary Boots, Clamps, Hardware, and Heatwrap

    Install Kit Only '03-07 5.9 $2,195.00

    Turbo Sold Seperate