Chevrolet Silverado 3500 HD Turbo Swap Kit - Wehrli - S300 Single Turbo - Deore Gold - 01-04. A proven solution to convert your LB7 Duramax from the stock IHI to an S300-frame single.

Built by Wehrli Custom Fabrication (WCFab), this kit upgrades the intake and charge system for improved airflow. It includes a 4 in. fabricated aluminum intake with air box and dry filter, 3 in. mandrel-bent 14 ga piping, and a 3 in. fabricated billet Y-bridge. The ceramic-coated 3 in. downpipe mates to the factory V-band (no cutting). Stainless braided Parker oil feed/drain lines and a T4 pedestal complete the swap. Note: forward-facing thermostat housing WCF100405 required; turbine housing must use an HX40 outlet. Turbo not included.

Features

• Fits 2001–2004 6.6L Duramax LB7 (2500/3500 HD)
• T4 mount for S300 turbos; turbo sold separately
• 4 in. intake with fabricated air box and dry filter
• 3 in. billet Y-bridge and 3 in. mandrel-bent piping
• Ceramic-coated 3 in. downpipe; factory V-band connection

Questions or fitment checks? Call Austin, TX at 512-982-9393 or Los Angeles, CA area at 562-981-6800. We offer 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