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Wehrli Custom Fabrication 2003-2007 5.9L Cummins S400/S300 Side by Side Twin (Compound) Turbo Kit - WCF100864

  • 5" Intake
  • Dry Air Filter
  • Outerwear's Pre-Filter Cover
  • 4" Two Piece Down Pipe
  • S400 Turbo Pedestal
  • 3.5" Hot Side Pipe
  • 3.5" Cold Side Charge Pipe
  • 3" Intercooler Pipe
  • Stainless steel oil feed and drain lines with fittings
  • Silicone Boot
  • Stainless Steel T-Bolt Clamps
  • V-Band Clamps
  • 1" T4 Spacer Plate
  • Heat Wrap & Clamps
  • Installation Hardware
  • High Temp Black Ceramic Coating on Hot Side & Down Pipes
  • Powder Coating
Availability: STAINLESS DIESEL EXHAUST MANIFOLDS 10% OFF FOR A LIMITED TIME. Price as marked in drop down notes. Built to Order. Please contact us for current lead times.
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
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S400/S300 Cummins Side by Side Style Custom Twin (Compound) Turbo Kit. 1000+ 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:

S364.5/S476 - 850+ RWHP with Supporting Modifications - for hot rod daily driver / tow rigs looking for big power and quick turbo spool up  

S366/S480 - 1000+ RWHP with Supporting Modifications - for hot rod daily driver / tow rigs looking for a 1,000 RWHP setup that still spools quickly

Still not enough? Check out our S400/S400 kits or give our specialists a call at 630-277-8239 for assistance custom building a setup 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: 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.


Shipping Information

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

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