Wehrli · New
Wehrli 01-04 Chevrolet Duramax LB7 S300/S400 Single Turbo 3in Y-Bridge Kit - Raw
MPN WCF100615-RAW · Store SKU wcfWCF100615-RAW
Supplier stock checked 11/7/2026, 2:42:14 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
3" High Flow Y-Bridge for custom fabrication use. Not a direct OEM replacement. Does bolt to OEM intake runners. 3" Bead Roll Connection at inlet. 14 ga Aluminum neck and TIG welded CNC machined billet aluminum center section and flanges. Includes bungs for MAP sensor installation and 1/8" NPT accessory port. Raw aluminum finish - requires additional finishing after purchase to prevent oxidation. The factory LB7 Duramax Y-bridge is a significant restriction in the engine intake tract limiting the engine's efficiency and ability to make power when big air and fuel system modifications are in play. This kit provides a larger, better flowing, more direct path to the intake runners for high horsepower Duramax performance engines to help them breathe more efficiently. Wehrli Custom Fab Y-Bridge, 3 in. for S300/S400 Single Turbo, 01-04 Duramax LB7, Raw Y-Bridge, 3 in. for S300/S400 Single Turbo, 01-04 Duramax LB7, Raw
Manufacturer fitment & guides
Check WCF100615-RAW against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
