Airaid SynthaFlow Drop-In 2011 GMC Sierra 2500 HD 6.6L
⚠ Call for Availability
This item may be on backorder. Please contact us to confirm supplier availability and estimated lead time before ordering.
Regular price
$84.99
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
Got Questions? Feel free to email us or call us at (503) 235-1947
Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for
competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase.
Orders shipping to restricted areas may be canceled.
Get more air through the stock airbox with the Airaid SynthaFlow Drop-In Air Filter (air855-466) - a direct replacement for 2011 GMC Sierra 2500 HD 6.6L.
- Fits 2011 GMC Sierra 2500 HD 6.6L Duramax Diesel
- Direct fit into the factory airbox - no cutting, no extra parts, no tune
- SynthaFlow oiled cotton and synthetic blend - Airaid recommends it for dusty, dry conditions
- Filters dirt down to 2 microns
- Washable and reusable - service every 30,000-50,000 miles
- Installs in under five minutes with no modifications required
- Tested for filtration, dust capacity and airflow in Airaid's in-house ISO 5011 lab
- Made in the USA, backed by Airaid's No-Hassle Lifetime Limited Warranty
Perfect for a stock truck that needs more airflow while leaving the factory intake tract and emissions equipment untouched.
Shipping Height: 2.75
Shipping Length: 15.56
Shipping Width: 11.31