About this product
The factory LBZ and LMM Duramax Y-bridge is a slip-fit two piece design with almost no support, and on a hard working or high boost truck it blows apart. The Wehrli High Flow 3" Y-Bridge (Manufacturer Part # WCF100235) is a bolt-together two piece replacement built for custom performance and racing builds. Bridge assembly only — read the Notes before ordering.
Why Choose the Wehrli High Flow 3" Y-Bridge?
- Bolts together instead of slipping together – the OEM design separates under boost. This one is mechanically fastened, which is the whole point of the part.
- Full 3" high flow path – sized for aftermarket piping and turbo kits running real boost pressure.
- Bolts to the OEM intake runners – the engine side stays factory, no runner modification.
- 3" bead roll connection at the inlet – gives the boot and clamp something to hold onto.
- O-ring seals included – for both the bridge inlet and the intake runners.
- Raw finish as standard – ready for polishing or paint, with custom powder coat available as an upgrade.
- Made in the USA.
Kit Includes
- 3" high flow Y-bridge, two piece bolt together assembly
- O-ring seals for the bridge inlet and intake runners
Fits These Models
2006-2007 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD with the 6.6L Duramax LBZ, and 2007.5-2010 with the 6.6L Duramax LMM.
Specifications
- Bridge: 3" high flow, two piece bolt together
- Inlet: 3" bead roll connection
- Finish: raw as standard, custom powder coat optional
- Shipping weight: 5.0 lbs
- Package dimensions: 20" W x 8" H x 8" L
- Direct replacement for the Y-bridge used in WCF100163 and WCF100164
- Made in the USA
Key Features at a Glance
- Bolt together two piece design - fixes the OEM separation problem.
- Full 3" flow path - built for high boost applications.
- Bolts to OEM intake runners - no engine side modification.
- O-ring seals included - inlet and runners.
- Raw or powder coat - pick your finish above.
Notes
- ⚠ BRIDGE ASSEMBLY ONLY. This does not include the upper cross-over pipe or the passenger side intercooler pipe. If you want a complete Y-bridge kit rather than the bridge on its own, call us before ordering.
- ⚠ Not compatible with OEM piping. This is designed for aftermarket and custom fabricated high flow piping and turbo kits. Integrating it with a factory intercooler system requires additional fabrication work. This is a build part, not a bolt-on.
- Lead time varies by finish. Gloss Black and Raw are stocked and ship in 3-5 business days. Custom powder coat colors are made to order and carry additional lead time.
FASS SKU: WCFWCF100235
Manufacturer Part #: WCF100235
Questions? We’re Here to Help.
Have questions about upgrades for your 6.6L Duramax? Contact FASS Motorsports and we’ll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
Description supplied by FASS Motorsports through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






