GMC Sierra 2500 HD Performance Air Intake by Wehrli, Stage 2, 4 in., Kiwi Green (2020–2025). This bolt-on, high-flow system replaces restrictive factory plastic with a fabricated aluminum air box and a serviceable dry filter.

Built for the L5P 6.6L Duramax, the kit’s 4 in. mandrel-bent aluminum tube and oversized intake horn increase airflow and reduce restriction. The sealed air box pulls cool air from the hood ram-air duct and inner fender for quicker throttle response, cooler intake temps, and a deeper turbo note. No tuning required, compatible with stock trucks, and made in the USA. Disable the factory air filter monitor to avoid a service message.

Features

• 4 in. intake pipe and 4 in. intake horn
• 10-gauge aluminum air box and lid with ram-air seal
• Dry filter with Outerwears pre-filter
• High-quality silicone boot and stainless T-bolt clamps
• Durable Kiwi Green powder coat finish

Have questions or want professional install? Call our Austin, TX or Los Angeles, CA teams—we offer installation and customization at both locations: 512-982-9393 (TX), 562-981-6800 (CA).

Purchasing multiple items? Contact us for potential shipping discounts. We install on premises at both locations.

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