Wix 42099 Air Filter

WIX 42099 Engine Air Filter for Cadillac

The WIX 42099 engine air filter is built for Cadillac applications that need dependable intake protection in everyday driving and harsher conditions. It is a panel-style air filter with cellulose media and a durable seal design for consistent filtration performance.

Key Features

• Engine air filter for air and fuel delivery maintenance
• Cellulose media with phenolic resin treatment for added moisture resistance
• 30% more media than comparable OES filters
• Laboratory-tested to at least 99.5% efficiency per ISO 5011, based on Wix 42389
• Polyurethane seal used where applicable for hot and cold temperature durability
• 115 CFM rating for airflow support
• Fits Cadillac Commercial Chassis, DeVille, Fleetwood, and Eldorado applications

Detailed Description

WIX part number 42099 is a premium panel engine air filter designed for 1968-1979 Cadillac Commercial Chassis, 1968-1979 Cadillac DeVille, 1968-1979 Cadillac Fleetwood, and 1968-1978 Cadillac Eldorado applications. Its 2.578-inch height, 12.344-inch top and bottom outer diameter, and 10.844-inch inner diameter bottom reflect the dimensions needed for the listed Cadillac fitments. The filter uses enhanced cellulose media treated with phenolic resin to improve durability against moisture ingestion, while the seal design is intended to hold up under temperature extremes. This part cross-references Monroe Shocks & Struts (e.g., 39269) for the same application.

What It Helps Address

• Restricted airflow caused by a dirty or loaded engine air filter
• Dust and debris entering the intake system during stop-and-go driving
• Filtration concerns on dirt roads, construction zones, and short-trip use
• Maintenance needs for Cadillac air filter replacement intervals
• Engine protection demands during interstate and severe-duty driving

Installation Notes and Tips

Verify the filter dimensions and housing style against the vehicle’s air cleaner assembly before installation. Replace the filter at the OEM service interval or sooner if driving conditions include heavy dust, frequent short trips, or extended stop-and-go traffic. For best results, inspect the air box for debris before installing the new WIX 42099.

Quality Assurance

WIX states that this filter line is engineered for normal and severe driving conditions and tested to ISO 5011 efficiency standards. The WIX 42099 is recommended for OEM air filter change intervals and is built to deliver consistent engine air filtration for the listed Cadillac applications.