Chevrolet Duramax Performance Air Intake - Wehrli - Grape Frost - `11-`16 is a complete 4" intake kit designed for 2011–2016 LML Duramax trucks. This bolt-on assembly replaces the restrictive factory plastic components with a fabricated aluminum intake and air box to improve airflow and engine response.

The Wehrli kit features a large-diameter 4" intake pipe with smooth bends and a dry filter assembly housed in a fabricated aluminum air box. By drawing cooler air from the inner fender and increasing air volume to the turbo, the design helps improve throttle response, reduce intake temperatures, and support gains in horsepower and torque without requiring a tune. The removable air box lid and included hydrophobic pre-filter cover make inspection and maintenance straightforward, while quality silicone boots, stainless steel t-bolt clamps, and included hardware ensure a durable, user-friendly installation. Finished in Wehrli’s Grape Frost powder coat for a distinctive look on your truck.

Features

• 4" fabricated aluminum intake pipe and air box
• Dry air filter with hydrophobic pre-filter cover
• Silicone boot, stainless steel t-bolt clamps, and installation hardware
• Draws cooler air from the inner fender to the turbo
• Removable air box lid for easy inspection and maintenance
• Powder coat finish in Grape Frost; made in USA
• No tuning required — bolt-on installation with basic hand tools

If you have questions or want help confirming fitment, call us directly — 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov