The WCFab LML 4.8 in. High Flow Cast Aluminum intake horn replaces the restrictive OEM plastic inlet to provide increased airflow to your turbo for improved performance and throttle response. Includes port for PCV connection. Eliminates resonator for improved appearance and more aggressive turbo and engine sound. Designed to complement our Stage 1 LML Intake Kits and Stage 1 High Flow Bundle Kits. Powder coated in the custom color of your choice. - - Replaces the following GM Part Numbers: 12642296 and 12637801. Not compatible with OEM and aftermarket intakes (such as K&N) that do not use a silicone boot connection at the horn. If your intake has a built-in rubber connection that slides onto the OEM horn and is molded to the air intake pipe, it WILL NOT fit with our horn. The WCFab horn must be used with an intake pipe that will accept a 4" boot and clamp.. NOTE: 2011 MODEL YEAR TRUCKS MUST UPDATE PCV Regulating Valve to 2012-2016 model year spec to allow correct fitment and compatibility with this part. Not compatible with aftermarket LML Y-bridges that change the manifold / bridge inlet from the original factory (driver side inlet) location. Wehrli Custom Fab Intake Horn, 5in., for 2011-2016 Duramax LML, Flat Black. Wehrli 11-16 Chevrolet 6.6L LML Duramax 5in Intake Horn - Flat Black. Intake Horn, 5in., for 2011-2016 Duramax LML, Flat Black. 4.8 in. Inlet, Largest Intake horn on the market. Intake Horn 5in. 11-16 Dmax Flat Black. Eliminates Resonator Connection. O-Ring Seal and New EGR Gaskets. Stainless Steel T-Bolt Clamps. Cast Aluminum Construction. Custom Powder Coat Finish. Turbocharger Inlet Pipe. Silicone Reducer Boot. Int Horn 11-16 FB. Includes PCV Port. Made in USA

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