Universal Air FI1021AC Cabin Air Filter

Particulate Cabin Air Filter for GM Applications

Universal Air FI1021AC is a particulate cabin air filter for select Cadillac, Buick, Pontiac, and Oldsmobile vehicles. It is built for drivers who need direct-fit cabin filtration coverage across multiple GM platforms, including Cadillac DTS, Buick LeSabre, and Pontiac Bonneville applications.

The FI1021AC part number is used for fitment-specific replacement searches and catalog matching. If you are sourcing a cabin air filter for a 2006-2011 Cadillac DTS or a 2000-2005 Buick LeSabre, this filter belongs in the HVAC filter service category.

Key Features

• Particulate cabin air filter for HVAC filtration service
• Fits select Cadillac, Buick, Pontiac, and Oldsmobile models
• Cataloged under Universal Air FI1021AC
• Application-specific coverage for GM passenger vehicles
• Supports cabin air filter replacement searches by year, make, and model

Fitment Coverage

• Fits 2006-2011 Cadillac DTS, N/A — Particulate Cabin Air Filter
• Fits 2000-2005 Buick LeSabre, N/A — Includes Filter Only; Particulate Cabin Air Filter
• Fits 2005 Cadillac DeVille, N/A — Particulate; Particulate Cabin Air Filter
• Fits 2000-2005 Pontiac Bonneville, N/A — Includes Filter Only; Particulate Cabin Air Filter
• Fits 2000-2004 Cadillac DeVille, N/A — Particulate; Includes Filter Only; Particulate Cabin Air Filter
• Fits 2001-2003 Oldsmobile Aurora, N/A — Includes Filter Only; Particulate Cabin Air Filter
• Fits 1999 Oldsmobile Aurora, N/A — Includes Filter Only; Particulate Cabin Air Filter
• Fits 2000-2002 Cadillac Eldorado, N/A — Particulate Cabin Air Filter

What It Helps Address

• Restricted cabin airflow from a loaded filter
• Dust and debris entering the HVAC intake path
• Reduced filtration performance in the passenger compartment
• Service replacement for aging cabin air filter media
• Fitment lookup for Cadillac DTS, DeVille, Eldorado, LeSabre, Bonneville, and Aurora models

Installation Notes

Verify the vehicle year, make, and model before ordering. This FI1021AC cabin air filter is cataloged by application, so match the vehicle listing exactly and follow the vehicle service procedure for access to the HVAC filter location.

Quality Assurance

Universal Air identifies this part as a particulate cabin air filter for the listed GM applications. Use the part number FI1021AC and the vehicle fitment details to confirm the correct replacement before installation.