Upgrade your 2011-2016 Chevrolet Silverado or GMC Sierra 2500 HD and 3500 HD with the Wehrli Duramax LML 4-inch Intake Kit, designed for optimal airflow and engine performance. This kit features a high-flow fabricated aluminum intake pipe with smooth aerodynamic bends, which significantly enhances air velocity and volume compared to the stock plastic components. The large diameter 4-inch piping draws in colder, denser air through the inner fender, resulting in increased horsepower, torque, and quicker throttle response while producing a more aggressive turbo sound during acceleration. The durable all-aluminum construction ensures longevity and resistance to the demanding conditions of diesel performance upgrades. The kit includes a dry filter assembly with a removable air box lid for easy inspection and maintenance, along with a hydrophobic pre-filter cover that helps keep contaminants away from the MAF sensor, turbo, and engine airways. All hardware, silicone boot, seals, and stainless steel T-bolt clamps are included for a straightforward, bolt-on installation that requires only basic hand tools. Finished in Wehrli’s signature WCFab red powder coat, this intake kit not only improves your vehicle’s performance but also adds a distinctive, custom look to your engine bay. Designed to be compliant with EPA standards and made in the USA, this kit requires no tuning and is a full assembly ready to install. With its efficient design and premium components, the Wehrli 4-inch intake kit is an excellent upgrade for diesel enthusiasts seeking enhanced power and a bold engine sound.
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