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EvilFab - Cummins 2003-2007 S300/S400 Over Under Compound Kit

Sale price

Regular price $3,495.00
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Complete side mount style S300/S400 compound kit! This kit is fabricated in house with high quality steel tubing and flanges, then test fit on one of our mock up trucks so fitment is always spot on. Kit works around factory shock tower, ac lines and coolant tank. Black Braided oil lines with high pressure AN style connections ensure a leak free oiling system. 100% v-band connections will ensure you don't blow any silicone couplers making this kit the most reliable on the market. Comes as complete piping with accessories, turbos and manifold (if chosen).

850 HP S363/S475: Great for a hot street daily driver/tow rig with quick spool up. We use the 68 turbine on 94-02 kits and the 74 turbine on 03-07 kits.

1000 HP Billet S366/S480: Great for guys who want the most out of their hot street daily driver/tow rig with quick spool up looking for 4 digit power.


Our Kit Includes

  • 5" Intake
  • 4" Downpipe
  • 3.5" Hot Pipe
  • 3.5" Charge Pipe
  • 3" Full V Band Intercooler Tubing
  • Black AN Style Oil Lines and Fittings
  • Cleanable High Flow Air Filter
  • Clamps, Hardware, Gaskets & O-Rings
  • Manifold Spacer
  • Coolant Re-route

Due to high volume of orders, some kits are built to order, please allow 10-15 business days for raw kits and 15-30 days for coated kits to ship. All sales are final. 

Powder Coating:

If you have selected to add powder coating, please email with desired prismatic color. We coat turbo(s), tubing, and t bolt clamps the color of choice and v band clamps gloss black.