Chevrolet Silverado 3500 Turbo Swap Kit - Wehrli - S300 - Cat Yellow - 01-04. Built for the 6.6L LB7 Duramax, this single-turbo kit converts the factory IHI setup to an S300-based system with proven airflow components and a durable Cat Yellow finish.

Built by Wehrli (WCFab) for 2001-2004 Silverado 2500/3500 HD LB7, this kit replaces the restrictive IHI layout with an S300-ready setup. It adds a 4" fabricated aluminum intake, 3" mandrel-bent 14-ga hot/cold tubes, and a 3" fabricated high-flow billet y-bridge. A ceramic-coated 3" HX40 downpipe mates to the factory V-band; stainless braided Parker oil lines and a T4 pedestal with spacer are included. LB7 installs require WCFab forward-facing thermostat housing (WCF100405). If using your own turbo, confirm HX40 outlet and provide details for fitment.

Features

• 4" fabricated aluminum intake, air box, premium dry filter with pre-filter
• 3" mandrel-bent 14-ga hot/cold intercooler pipes
• 3" fabricated high-flow billet y-bridge with cold-side pipe
• Ceramic-coated 3" HX40 downpipe to factory V-band
• Stainless braided Parker oil feed and drain; T4 pedestal with hardware; driver-side trans dipstick relocation, clamps, boots, heat wrap
• Cat Yellow powder coat; Made in USA

Have 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 professional 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