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Wehrli Custom Fab 2003-2007 5.9 Cummins S400/S300 Side by Side Twin Turbo Kit

-Dry Air filter
-Stainless Steel Oil Feed and Drain Lines with Fittings for both turbos
-4" Turbo Down Pipe
-Atmosphere turbo pedestal
-3 1/2" Turbo Hot Side Cross Over Pipe
-3" Hot Side Intercooler Pipe
-One Piece 3 1/2 " Cold Charge Pipe Between Turbos with V-Band Connections
-O-ring seals
-Silicone Boots
-T-Bolt Clamps
-V-Band Clamps
-Heat Wrap & Clamps
-High Temp Black Coating
-Powder Coating
Availability: Built to order. Please allow an additional 10 business days lead time.
Shipping: This Product cannot ship to the state of California
Pricing: $2,795.00

Customize Your Item

- Model Year -
 * required
- Powder Coating -
 * required
- High Flow Intake Horn & IC Pipe -
 * required
- Grid Heater -
 * required
- S400 T6 (Atmo) Turbocharger -
 * required
- Powder Coat S400 Turbo Cover -
 * required
- S300 Turbo Charger -
 * required
- S300 Exhaust Housing -
 * required
- Powder Coat S300 Turbo Cover -
 * required
- Exhaust Manifold -
 * required
- Stainless Exhaust Manifold Stud -
 * required
- T4 Turbo Heat Blanket -
 * required
- T6 Turbo Heat Blanket -
 * required
- T4 Exhaust Housing Finish -
 * required
- T6 Exhaust Housing Finish -
 * required
- D&J Precision Billet Valve Cover -
 * required


S300/S400 Side by Side Style Compound Turbo Kit for the 2003-2007 5.9 Cummins are a step above the typical S400/Stock combination. These Kits can be used for extreme towing with the properly spec'd high pressure turbo, or built to exceed 1200 RWHP. If you are not buying a manifold and turbo chargers from us, you may be required to send your parts in for us properly mock up and build the kit. Every WCFab Turbo kit is hand build in house by our experienced fabricators and welders and every component is built and test fit on our jigs to ensure proper fitment. Unlike many other kits on the market we do not use boot connections between the turbo chargers, only v-band for a boost-leak free setup. All tubing is TIG welded and the mating flanges are CNC machined with O-ring seals where necessary. We stand behind our fabricated components and workmanship for the life that you own the product. The Compound Turbo Kit comes with all the necessary components to install, with several upgrades and turbo options available.

***If you are supplying your own turbo's they WILL NEED TO BE SENT IN For modifications.


  • WCF100864
  • WCF100864
  • Wehrli Custom Fabrication
  • Built to order. Please allow an additional 10 business days lead time.
  • New

Shipping Information

  • Item Requires Shipping
  • 65.0 lbs.
  • W24.0000” x H12.0000” x L36.0000”
  • This item ships in its own box.
  • This Product cannot ship to the state of California

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