Chevrolet Silverado 2500 HD Turbo Swap Kit - Wehrli - S400 - Candy Red - 01-04. Purpose-built for 2001–2004 6.6L LB7, this WCFab kit swaps the stock IHI layout to an S400-style foundation for higher airflow potential.

It’s a complete air-path overhaul for 2500/3500 HD, ready for popular S400 choices (turbo sold separately). Includes a 5 in fabricated aluminum intake with sheet‑metal air box and premium dry filter, 3 in mandrel‑bent 14‑ga aluminum hot/cold pipes, and a 3 in fabricated billet y‑bridge to cut restriction. Stainless braided Parker oil lines and a T4 steel pedestal with spacer are supplied. The ceramic‑coated 3 in downpipe mates to the existing front pipe via V‑band; no cutting. Note: forward‑facing thermostat housing WCF100405 required; downpipe fits Half Marmon S400 (4.6 in), not HX40.

Features

• 5 in intake with fabricated air box and lid
• 3 in 14‑ga mandrel‑bent charge pipes
• 3 in high‑flow fabricated billet y‑bridge
• Stainless braided oil feed and drain lines
• T4 pedestal, ceramic‑coated 3 in downpipe, Candy Red, Made in USA

Need help with turbo sizing or SXE/race cover build‑to‑order details? Call us. We offer installation and customization at our Austin, Texas 512-982-9393 and Los Angeles, California area 562-981-6800 locations.

If you plan to purchase multiple items, please contact us about shipping discounts.

We install on premises at both locations.

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