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SKU #: WCF-WCF100165-GB
MPN #: WCF100165-GB
Wehrli Custom Fab Y-Bridge Kit 11-16 GM 6.6L Duramax LML
Description
Has your Duramax felt a little out of breath? Your stock intake manifold can be restrictive, making bottlenecks in your air intake system which robs you of performance! Grab Wehrli's Y-Bridge kit that can increase airflow by up to 40% so your engine gets to breathe free.
NOTE: While some colors are kept in stock, other colors will take an extra 10-15 business day delay in powder coating.
Wehrli's Y-Bridge Kit comes with their custom high flow, precision CNC machined, cast aluminum precision intake bridge (40% more airflow than stock) together with a unique, 20% larger than stock, 3" fabricated aluminum upper crossover intercooler pipe that allows you to take full advantage of the larger inlet diameter of the y-bridge.
What does more airflow mean? It means you get the most out of your engine in terms of performance and efficiency. If you have done or are planning any performance upgrades like injectors and fuel pumps it is essential you clean up your airflow or all of those upgrades will be "up in smoke."
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About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
BENEFITS AND FEATURES:
- Flows 33% better than stock
- Precision CNC Machined Cast Aluminum Construction
- Includes 3 in., 14g aluminum, Fabricated High Flow Upper Intercooler Cross Over Pipe
- Includes Billet Turbo Resonator Plate for OEM Intake Horn
- Connects to factory throttle valve, grid heater, EGR and stock intake runners
- NO Tuning required, bolt on!
- Will fit on stock truck no other modifications or upgrades necessary!
- Durable Custom Powder Coat Finish
About Wehrli Custom Fabrication
Born from a garage dream in Sandwich, Illinois, and now headquartered in DeKalb, Illinois, Wehrli Custom Fabrication (WCFab) has earned a formidable reputation in the diesel performance world. From its hands-on beginnings to its expansion into a team of 50-plus skilled builders, WCFab continues to elevate diesel upgrades, even as the brand evolves into fabrication and powder coating excellence.
At its core, Wehrli is dedicated to powering Duramax, Powerstroke, and Cummins trucks with rugged, high-performance parts that meet the real-world demands of hauling, towing, and racing. Every product is proudly Made in the USA, from turbo kits and cold air intakes to heavy-duty Allison transmission builds capable of handling up to 750hp, thoroughly crafted in a climate-controlled clean room.
Whether you’re upping airflow with precision CNC-machined intakes and intake horns, clearing the engine bay with billet block-off plates, or commanding raw transportation power with a 750+hp Allison transmission, Wehrli’s work is synonymous with resilience and peak performance. Products like their L5P Duramax high-flow turbo intake horn boast a 27% increase in flow, proving that function and form can coexist beautifully.
Customer support is a serious affair at WCFab they stand firmly behind their fits and finishes Led by the Wehrli brothers and a crew fueled by diesel passion, the brand’s mission is clear: deliver top-tier craftsmanship, unmatched performance, and relentless customer service.
Wehrli Custom Fabrication—where diesel dreams are forged into reality, in metal you can feel and performance you can trust.
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