GMC Duramax Twin Turbo Kit - Wehrli - S400/Stock - Kiwi Green - 01-04. Compound system for 2001-2004 LB7 trucks that adds serious headroom for power while keeping streetable response.

This WCFab S400/Stock kit is 1000 RWHP capable with proper turbo and fuel mods, delivering strong EGT control and stock-like spool for daily and tow duty. Suggested pairings include S475/Stock (~750 RWHP), S480/Stock (800+), or S480/64mm (900+), with supporting mods and a built Allison recommended. Not compatible with Banks intercoolers; contact us for options. Requires passenger-side battery relocation. Hot/driver-side intercooler pipe sold separately (WCF100349). Turbochargers not included.

Features

• Made in USA; Kiwi Green powder coat
• 5" intake, dry filter with pre-filter
• Coolant overflow tank with hoses, fittings, low sensor
• Silicone boots, T-bolts, V-bands, heat wrap
• Atmosphere pedestal with built-in oil return; stainless oil lines
• 3.5" cold-side charge pipe; 3" one-piece Y-bridge (HD bead roll)
• 4" ceramic-coated downpipe; 3" cold-side intercooler pipe

Questions or planning an install? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer installation and customization at both locations.

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

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