Image coming soonWehrli 17-26 L5P Duramax 6.6L High Flor Y-Bridge Kit - Sparkle Granny Smith
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Take your 2017–2026 Chevy Silverado / GMC Sierra 2500/3500 HD 6.6L L5P Duramax to the next level with the Wehrli Custom Fabrication High Flow Y-Bridge Kit in Sparkle Granny Smith – an emissions compatible, Made in USA upper intake manifold that flows 33% more air than OEM with no additional tuning required.
Why Choose the WCFab L5P High Flow Y-Bridge?
- 33% more air flow than OEM – engineered to maximize airflow and improve efficiency
- Even distribution – charged air split evenly to both cylinder heads (stock splits 70% Driver / 30% Passenger)
- MAP sensor protection – integrated mounting bosses move the sensing element(s) out of the flow path, reducing oil and soot buildup to increase sensor life and maintain proper readings – no spacers needed
- Real-world gains – improved throttle response, quicker turbo spool-up and lower EGTs while towing
- Stock truck friendly – an emissions-compatible bolt-on that works with no tuning required
- Room to grow – pair with custom tuning and upgraded turbochargers to reach power levels a stock y bridge can’t support
Fitment Notes
- Compatible with 2017-2022 single and 2023-2026 dual MAP sensor engine systems.
Fits These Models
2017–2026 Chevy Silverado / GMC Sierra 2500/3500 HD with the 6.6L L5P Duramax
Key Features at a Glance
- Enlarged air inlet tract – port matched to the throttle valve to maximize the available flow path
- 356 aluminum – cast in the USA from high quality 356 aluminum, precision CNC machined at WCFab
- Powder coat finish – durable custom Sparkle Granny Smith powder coat
- Made in USA – the culmination of years of R&D pushing the GM platform to its limits
SKU: WCFWCF100171-SGS
Questions? We’re Here to Help.
Have questions about upgrades for your L5P Duramax? Contact FASS Motorsports and we’ll get you dialed:
Phone: 636-429-7020
Email: info@fassmotorsports.com
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 2017 | Chevrolet Silverado 2500 HD |
| 2017 | Chevrolet Silverado 3500 HD |
| 2017 | GMC Sierra 2500 HD |
| 2017 | GMC Sierra 3500 HD |
| 2026 | Chevrolet Silverado 2500 |
| 2026 | Chevrolet Silverado 3500 |
| 2026 | GMC Sierra 2500 |
| 2026 | GMC Sierra 3500 |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
