The GMC Sierra 3500HD Intake Horn by Wehrli is a high-performance upgrade designed for the 2011-2016 Duramax LML models. Crafted from high flow cast aluminum and finished in a striking Bengal Red, this intake horn enhances your vehicle's performance by replacing the restrictive OEM plastic inlet, resulting in improved airflow to your turbo and better throttle response.

This intake horn not only boosts performance but also enhances the auditory experience by eliminating the resonator, which results in a more aggressive turbo and engine sound. Designed to seamlessly integrate with Wehrli's Stage 1 LML Intake Kits and High Flow Bundle Kits, it features a port for PCV connection and is powder-coated for durability and customization. However, it is crucial to note that this intake horn is not compatible with OEM or aftermarket intakes that don't utilize a silicone boot connection. Additionally, trucks from the 2011 model year must update the PCV Regulating Valve to 2012-2016 specifications to ensure proper fitment.

Features

• Largest intake horn on the market with a 4.8 in. inlet
• Eliminates resonator connection for improved sound
• Includes O-ring seal, new EGR gaskets, and stainless steel T-bolt clamps
• Durable cast aluminum construction with a custom powder coat finish
• Includes PCV port and turbocharger inlet pipe
• Made in the USA

For automotive enthusiasts looking to enhance their Sierra 3500HD's performance and sound, the Wehrli Intake Horn is an essential upgrade. Should you have any questions or require assistance with compatibility or installation, feel free to contact us. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. Reach us at 512-982-9393 (TX) or 562-981-6800 (CA). For those considering purchasing multiple items, please contact us for possible shipping discounts. Remember, we install on premises at both locations.

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