GMC Sierra 3500 Turbocharger Kit – Wehrli S400/Stock, Brizzle Blue (2001–2004). A compound setup for LB7 Duramax that pairs an S400 atmosphere with the stock turbo for strong power potential and stock-like spool.

Built for daily work trucks and tow rigs seeking lower EGTs and efficient output. With supporting mods, popular combos include S475/stock to about 750 RWHP, S480/stock for 800+ RWHP, or S480/64mm drop-in for 900+ RWHP. Turbos are sold separately. Not compatible with Banks intercoolers without additional parts and lead time. Requires relocation/removal of the passenger-side battery. Hot/driver-side intercooler pipe not included (WCF100349).

Features

• 2001–2004 Duramax LB7 fitment; Brizzle Blue powder coat
• 5" intake with dry filter and pre-filter cover
• 4" ceramic-coated downpipe; 3" one-piece Y-bridge
• 3.5" cold-side charge pipe and inlet horn; stainless oil lines
• Coolant overflow tank with sensor; boots, T-bolt/V-band clamps; heat wrap
• Atmosphere pedestal with built-in oil return; Made in USA

Questions or build planning help? 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 services at both locations.

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

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