GMC Sierra HD Performance Air Intake - Wehrli - 4in with Air Box - Illusion Blueberry - `07-`10. A fabricated 4-inch aluminum intake and enclosed air box from Wehrli Custom Fabrication to upgrade the factory system on 2007.5–2010 Duramax LMM Sierra HD trucks.

Engineered to move more air to the turbo, this kit uses large-diameter, smooth-bend piping and an enclosed box that draws cooler air from the inner fender. The dry filter and included Outerwears pre-filter help keep the MAF, turbo, and intake tract cleaner, while the removable lid makes inspection simple. Expect quicker throttle response, a more assertive turbo/engine note, and intake temps helped by the cold-air source. High-quality silicone boot, stainless T-bolt clamps, and complete hardware support an easy, bolt-on install with basic tools. Finished in Illusion Blueberry powder coat. Made in the USA.

Features

• 4 in aluminum intake pipe with smooth bends
• Enclosed air box with removable lid
• Dry filter with Outerwears pre-filter cover
• Draws cool air from inner fender
• Silicone boot and stainless T-bolt clamps
• No tuning required; bolt-on installation
• Illusion Blueberry powder coat
• Made in USA; fits 2007.5–2010 GM Duramax LMM (GMC Sierra HD)

Have questions or planning a build? Call our team—we’re happy to help and we offer installation and customization at our Austin, Texas and Los Angeles, California area locations: 512-982-9393 (TX), 562-981-6800 (CA).

If you’re 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