Sale

Air and Fuel Superchargers, Turbochargers and Components

Wehrli

Wehrli S400 Single Turbo Install Kit for 2001-2004 Duramax LB7 Illusion Blueberry Illusion Blueberry 100489-IBB

$3,370.00 $3,268.90 Save $101.10

SKU: W005 100489-IBB

In Stock
In Stock
Ships by Jun 18
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This WCFab big single turbocharger install kit is designed for 2001-2004 Chevy Silverado 2500 / 3500 HD trucks equipped with a 6.6L LB7 Duramax diesel engine. It facilitates the conversion from a stock IHI style turbo to a larger frame Borg Warner S400 style setup. The kit includes a 5" fabricated aluminum intake with a heavy-duty sheet metal air box and a high-performance dry filter. Intercooler hot and cold side charge pipe plumbing are upgraded to high-flow 3" diameter mandrel bent 14 gauge aluminum tubes. Also included is a high-flow 3" fabricated billet y-bridge kit to replace the restrictive stock upper intake manifold, enhancing airflow for maximum horsepower and efficiency gains. High-quality stainless steel braided Parker oil lines are supplied, with the oil feed line routing from the main oil galley on the side of the engine block. A T4 fabricated steel pedestal with spacer, compatible with WCFab's 2" high-flow stainless steel up pipes, is included for mounting various popular turbo size options (sold separately). The high-temp ceramic coated turbo downpipe connects to the existing exhaust front pipe V-Band clamp, simplifying installation without requiring cutting or modification to the exhaust system. A driver-side transmission dipstick tube is included to ease downpipe installation.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandWehrli
Part NumberW005 100489-IBB

Videos

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy