GMC Sierra 3500 HD Performance Air Intake – Wehrli Stage 2, 4 in., Kiwi Green (2020–2025). High-flow fabricated aluminum intake and air box that replace restrictive factory plastics on L5P 6.6L Duramax trucks.

Smooth 4 in. piping and an oversized intake horn (over an inch larger than OEM) are designed to move more air to the turbo for improved power, quicker throttle response, and cooler intake temps. The air box seals to the functional hood Ram Air duct and also pulls fresh air from the inner fender. Durable Kiwi Green powder coat, bolt-on install, and no tuning required. Fits 2020–2025 GM Duramax L5P Sierra/Silverado 2500/3500 HD. Note: disable the factory Air Filter Monitor to avoid a Service Air Filter message.

Features

• 4 in. intake pipe and 4 in. intake horn
• 10-gauge aluminum air box and lid
• Dry filter with Outerwears pre-filter; silicone boot; stainless T-bolt clamps
• Made in the USA; replaces GM PNs incl. 84841229, 84841225, 84262962

Questions or want to schedule install/custom work? Call our Austin shop at 512-982-9393 (TX) or our Los Angeles area shop at 562-981-6800 (CA). We offer installation and customization at both locations. Buying 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