Chevrolet Silverado Twin Turbo Kit — Wehrli S400/Stock, Sparkle Bomber Orange, 01–04. For 2001–2004 LB7 Duramax, this compound kit pairs an S400 with the stock turbo for quick spool and strong control.

Built for daily use and towing, the S400/stock layout keeps stock-like response while improving EGT control and power potential. With supporting mods: S475/stock ~750 RWHP, S480/stock 800+, and S480/64mm 900+; 1000 RWHP is possible. A built Allison is recommended at higher output. Requires passenger-side battery relocation. Not compatible with Banks intercoolers—contact us for options. Hot/driver-side intercooler pipe sold separately (WCF100349). Turbochargers not included.

Features

• Sparkle Bomber Orange powder coat
• Ceramic-coated 4" turbo downpipe
• 5" intake with dry filter and pre-filter cover
• Atmosphere turbo pedestal w/ built-in oil return; stainless oil feed/drain lines
• Coolant overflow tank w/ sensor, hoses, and fittings
• One-piece Y-bridge and cold-side piping; silicone boots, T-bolt/V-band clamps, heat wrap
• Made in the USA

Questions or need selection help? Call Texas at 512-982-9393 (TX) or California at 562-981-6800 (CA). We offer installation and customization at our Austin, TX and Los Angeles, CA shops.

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