GMC Sierra 2500HD Performance Air Intake – Wehrli WCFab 4" Intake Kit with Air Box, Fine Texture Black (2011–2016). High-flow aluminum system replacing restrictive factory parts on LML 6.6L Duramax trucks.

The 4-inch pipe with smooth bends increases airflow and draws cooler air from the inner fender to aid response and inlet temps, with a more pronounced turbo note under load. The aluminum air box uses a dry filter with a hydrophobic pre-filter and a removable lid for quick inspection. Includes silicone boot, seals, and stainless T-bolt clamps for an easy bolt-on install with basic tools. No tuning required. Fine Texture Black powder coat. Made in USA.

Features

• 4-inch fabricated aluminum intake tube
• Enclosed air box with removable lid
• Dry filter with Outerwear's pre-filter cover
• Silicone boot, seals, and stainless T-bolt clamps
• Bolt-on install with basic tools; no tuning required

Questions or fitment help? Call 512-982-9393 (TX) or 562-981-6800 (CA). We provide installation and customization at our Austin, Texas and Los Angeles, California area 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