Chevrolet Silverado 3500 HD Turbo Swap Kit - Wehrli - S300 - Illusion Blueberry - 01-04. A WCFab single fixed-vane S300-style swap for 2001–2004 LB7 Duramax, replacing the stock IHI turbo with a larger-frame setup for improved airflow and efficiency.

Includes a 4 in fabricated aluminum intake with heavy-duty sheet-metal air box and premium dry filter, plus 3 in mandrel-bent charge pipes and a 3 in fabricated billet Y-bridge to reduce restriction. The ceramic-coated 3 in HX40 downpipe mates to the factory front pipe, avoiding cutting. A T4 pedestal supports popular S300 sizes (turbos sold separately), with stainless braided oil lines and comprehensive hardware. Illusion Blueberry powder coat. Made in the USA. Note: WCFab forward-facing thermostat housing (WCF100405) required; HX40 turbine outlet needed if supplying your own turbo.

Features

• 4 in fabricated aluminum intake, air box, premium dry filter with pre-filter
• 3 in hot and cold side mandrel-bent 14 ga aluminum charge pipes
• 3 in fabricated high-flow billet Y-bridge with cold side pipe
• 3 in ceramic-coated HX40 downpipe; mates to factory front pipe
• T4 pedestal; stainless braided oil feed and drain lines
• Driver-side trans dipstick relocation, silicone boots, T-bolt and V-band clamps, heat wrap
• Illusion Blueberry powder coat; Made in USA

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

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