RAM 3500 Twin Turbo Kit - Wehrli - S400/Stock - Sparkle Copper - 03-07. A compound system for 2003-2007 5.9L Cummins that pairs an S400 atmosphere with your stock charger for strong street manners and serious headroom.

Built by Wehrli Custom Fab, this kit is 1000 RWHP capable depending on turbo choice and supporting fuel modifications. It is a solid option for daily drivers, work trucks, and tow rigs seeking lower EGTs, potential efficiency gains, and stock-like spool. Suggested pairings: S475/stock for quick response and up to ~750 RWHP with mods; S480/stock for stronger top end; S480 with 63/64 drop-in for 900+ potential; S480 with 67 drop-in for the highest top end (best with manual trans, not recommended for towing). Designed for the OEM manifold; if using an aftermarket OEM-style manifold, it must be sent to WCFab for custom fitment and lead time begins upon its arrival.

Features

• High-temp black ceramic on hot side and downpipe
• 5 inch intake with dry filter and Outerwears pre-filter
• 4 inch turbo downpipe, heat wrap, and clamps
• 3 inch cold charge pipe and 3 inch hot-side crossover
• Stainless oil feed/drain lines with fittings
• Silicone boots with stainless T-bolt clamps
• V-band clamps and O-ring seals
• Retains passenger-side factory battery location
• Durable Sparkle Copper powder coat
• Installation hardware included; turbochargers sold separately
• Made in USA

Have questions or want help choosing the right combo for your build? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer professional installation and customization at both locations.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov