Denso 143-3409 Air Filter

Denso 143-3409 Engine Air Filter

The Denso 143-3409 engine air filter is built for direct replacement service on a wide range of classic Chevrolet, GMC, Cadillac, Buick, Oldsmobile, and Pontiac applications. With circular dimensions of 250.0 inside diameter, 306.0 outside diameter, and 89.0 height, it is sized for the listed fitments and supports consistent airflow management in the intake system.

Denso’s First Time Fit Air Filter line is engineered to meet the brand’s quality standards for dependable filtration and repeatable fit. This part number is a practical choice for owners searching for a Denso 143-3409 air filter for Chevrolet C10, GMC K2500, or other listed GM truck and passenger car applications.

Key Features

• Engine air filter for air and fuel delivery service
• Circular filter shape with 250.0 inside diameter, 306.0 outside diameter, and 89.0 height
• Designed for listed Chevrolet, GMC, Cadillac, Buick, Oldsmobile, and Pontiac applications
• Part of Denso’s First Time Fit Air Filter line
• Direct replacement reference for Denso 143-3409

Product Details

Denso developed the First Time Fit Air Filter line to deliver consistent quality and fitment across supported vehicles. For buyers comparing replacement options, this filter cross-references FRAM CA326 and Wix 42098 for the same application. It is a strong match for drivers looking for an engine air filter for 1980-1997 Chevrolet and GMC trucks, along with selected Cadillac, Buick, Oldsmobile, and Pontiac models.

Compatible vehicle coverage includes applications such as Fits 1988-1995 Chevrolet C1500, N/A; Fits 1987-1994 Chevrolet Blazer, N/A; Fits 1988-1995 GMC K2500, N/A; and Fits 1980-1990 Buick LeSabre, N/A. Additional coverage extends across many GM platforms from 1980 through 1997, including Chevrolet P30, GMC P3500, Cadillac Fleetwood, and Pontiac Grand Prix.

What This Filter Helps Address

• Restricted intake airflow from a dirty or clogged engine air filter
• Routine maintenance needs on GM trucks and passenger cars
• Replacement of a worn filter element during scheduled service
• Fitment matching for Chevrolet C1500, GMC Yukon, and similar listed applications
• OE-style replacement needs for older carbureted and fuel-injected vehicles

Installation Notes and Tips

Verify the filter dimensions and vehicle application before installation. This part is listed for N/A position use and should be matched to the air cleaner housing on the specific vehicle. For best results, inspect the air box, sealing surfaces, and intake ducting during service so the new filter seats correctly.

Use the fitment list to confirm the exact year and model, especially on vehicles with California-specific or off-road package notes. The Denso 143-3409 is commonly searched for Chevrolet C10, GMC C1500, and related GM applications, so checking the notes against the vehicle build is important.

Quality Assurance

Denso states that its First Time Fit Air Filters are built to meet high quality standards, with quality assurance provided for the line. As an OEM leader in engine filtration components, Denso applies that manufacturing background to this replacement air filter.