GMC Sierra 3500HD Performance Air Intake by Wehrli (WCFab) – 4in Intake Kit with Air Box, Brizzle Blue, for 2004.5–2005 Duramax LLY. Fabricated aluminum system replacing restrictive factory parts for sharper response and airflow.

A fresh 4in design and enclosed box draw cold air from the inner fender to the turbo, supporting improved horsepower and torque, quicker throttle response, and cooler intake temps. Smooth-bend aluminum increases air velocity and adds a more assertive engine/turbo note. Serviceable dry filter with Outerwears pre-filter, removable lid, and quality silicone boot, seals, and stainless T-bolt clamps. Brizzle Blue powder coat. Bolt-on; no tuning required. Made in USA.

Features

• 4in aluminum intake tube
• Enclosed air box with lid
• Cold-air path from inner fender
• Dry filter with Outerwears pre-filter
• Silicone boot, seals, T-bolt clamps
• Bolt-on install; no tuning

Have questions or want to schedule installation? Call our Austin, TX or Los Angeles, CA area team. We offer installation and customization at both locations: 512-982-9393 (TX), 562-981-6800 (CA).

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