Fits: 2011 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel

Replace the restrictive plastic factory air intake parts for improved engine performance with the Wehrli Custom Fabrication 4" Air Intake Kit. This new design significantly increases air flow to your turbo producing improved horsepower and torque, quicker throttle response, and cooler intake temperatures by drawing cold air through the inner fender.

Features:

• 37% air flow improvement over stock
• 4" diameter piping, 14ga. aluminum
• 10ga. Aluminum construction air box
• Removable air box lid for ease of maintenance
• Improve airflow, throttle response, horsepower & torque
• Cooler intake air temperatures
• Aggressive engine and turbo sounds during acceleration
• High quality hardware, silicone boot, & stainless t-bolt clamps
• Installs easily with basic hand tools
• No tuning required
• Made in the USA
  

Includes:

• 4" Intake pipe
• Air box with lid
• Dry air filter
• Silicone boot
  
• Stainless Steel T-Bolt clamps
• Outerwears pre-filter cover
• Installation hardware
• Custom color powder coat POWDERCOAT COLOR CHART

​Notes: 

• Not compatible with WCF100641, WCF100691 or WCF100716 unless you have a compatible aftermarket intake horn
• Air box is not compatible with intake pipe kits from WCF100337, WCF100689 or WCF100691
• 15+ Business Days Before Shipment, this is a custom order part, once the order has been processed it CANNOT be canceled, returned, or refunded
• If you enter a powdercoat color that is not listed on the chart, your order will be delayed as we will have to contact you to discuss the options. RAW Finish is NOT available!

Replaces Part #:

• WCF100337
• GM 23467660
• GM 20917396
  
• GM 15819728
• GM 25881207
• GM 20847795
• GM 23210121
• GM 22870902

*THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT IS NOT LEGAL IN CALIFORNIA.*