This LML Y-Bridge Kit is an upgraded high flow intake kit for the 2011-2016 6.6L Duramax diesel engine which replaces the OEM upper intake manifold supplying air to the engine intake runners and cylinder heads. The OEM Y-bridge for these trucks is a restrictive part that creates a bottle neck in the air intake tract and limits engine performance potential. This kit improves air flow by 36% using a precision CNC machined cast aluminum high flow bridge which provides maximum airflow volume for the available space. This means you get the most out of your engine in terms of performance and efficiency. Includes 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 this bridge. Incorporates factory intake air heater grid for superior cold weather performance. Billet resonator plate eliminates the stock plastic resonator for improved engine bay appearance and more aggressive turbo and engine sound. Compatible with OEM throttle valve, EGR controls, and lower passenger side Intercooler Pipe. Add WCFab 3.5" High Flow Intercooler Pipe WCF100682 to get the most out of this kit. Finished in your choice of custom powder colors. This product is compatible with stock trucks requiring no additional modifications, upgrades, or tuning for installation. Pairs best with emissions compliant tuning and drop in turbochargers for optimum performance gains. Supersedes WCF100607. Replaces the following GM part numbers: 12658233
This Part Fits:
Year
Make
Model
Submodel
2015-2016
Chevrolet
Silverado 2500 HD
High Country
2011-2016
Chevrolet
Silverado 2500 HD
LT
2011-2016
Chevrolet
Silverado 2500 HD
LTZ
2011-2016
Chevrolet
Silverado 2500 HD
WT
2015-2016
Chevrolet
Silverado 3500 HD
High Country
2011-2016
Chevrolet
Silverado 3500 HD
LT
2011-2016
Chevrolet
Silverado 3500 HD
LTZ
2011-2016
Chevrolet
Silverado 3500 HD
WT
2015-2016
GMC
Sierra 2500 HD
Base
2011-2016
GMC
Sierra 2500 HD
Denali
2011-2016
GMC
Sierra 2500 HD
SLE
2011-2016
GMC
Sierra 2500 HD
SLT
2011-2014
GMC
Sierra 2500 HD
WT
2015-2016
GMC
Sierra 3500 HD
Base
2011-2016
GMC
Sierra 3500 HD
Denali
2011-2016
GMC
Sierra 3500 HD
SLE
2011-2016
GMC
Sierra 3500 HD
SLT
2011-2014
GMC
Sierra 3500 HD
WT
Any questions?
Address frequently asked questions about this product to minimize any concerns or uncertainties that might deter a customer from making a purchase.
Does it come with a warranty?
Any products listed will have a warranty provided by the manufacturer only. Stealth Diesel is not liable for any warranty. We can assist in warranty claims but we do not provide warranty on items we dont manufacturer. Most products have a 1 year warranty. For more information on warranty, reach out to us or the manufacturer for specific warranty details.
What happens if I have an issue?
We recommend reaching out directly to the manufacturer, but we are availble to assist with any issues or concerns for troubleshooting.
How fast is shipping?
Free ground shipping will be UPS ground, typically 5-7 business days or sooner. Expidited shipping is available on in stock products only.
What's the returns policy?
Most items are returnable unopened within 30 days of purchase. A stocking fee of 20% will be deducted for all returns. Items that are non-refundable are special order, custom made, powder coated, electrical or oversize items. Return shipping is at the expense of the buyer.
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