GMC Sierra 3500 HD Performance Air Intake - Wehrli - WCF 4in - Kiwi Green - '20-'25. This high-flow aluminum intake and air box replace restrictive factory parts on 2020-2025 6.6L Duramax L5P trucks to improve airflow and sharpen throttle response.

Built by Wehrli Custom Fabrication, the 4 in system uses smooth-radius piping and a sealed 10-gauge aluminum air box with a dry filter to draw cool air from the functional hood Ram Air duct and inner fender, helping reduce intake temps and let the turbo breathe. Expect quicker pedal response, stronger pull, and a more assertive engine and turbo note under acceleration. Durable Kiwi Green powder coat. Installs with basic tools; no tuning required; works on stock trucks. Note: Disable the OEM air filter monitor to avoid a service air filter message. Replaces GM PNs: 84841229, 84841225, 84262962, 85614333, 84554702.

Features

• 4 in fabricated aluminum intake pipe with smooth bends
• Sealed 10-gauge aluminum air box and lid with dry filter
• Seal to functional hood Ram Air port; draws from hood and inner fender
• Stainless steel T-bolt clamps and high quality silicone boot
• Outerwears pre-filter cover included
• Kiwi Green powder-coated finish
• Bolt-on install; no tuning required; L5P 2020-2025 compatibility

Questions or planning a build? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We have locations in Austin, Texas and the Los Angeles, California area offering professional installation and customization services.

If you are 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