ACDelco engine air filter A3087C (25839611) — GM OE direct-fit, multi-layer media

ACDelco GM Original Equipment A3087C (25839611) is a factory-quality engine air filter engineered to trap airborne particles and protect your GM engine while maintaining proper airflow.

This ACDelco OE air filter is built to the specifications used by General Motors for Chevrolet, Buick, GMC, and Cadillac vehicles. It combines multi-layer filter media with precision sealing surfaces so only clean, metered air reaches the combustion chamber. The A3087C is offered as a direct-fit replacement that matches factory dimensions, materials, and installation points, making it a straightforward swap during routine maintenance.

How does this air filter protect my engine?

The A3087C captures dust, pollen, and other airborne debris before they enter the intake system, helping preserve engine components and maintain consistent performance. It won’t restrict normal airflow when fitted correctly, so your engine breathes efficiently under typical driving conditions.

• Multi-layer filter media for particle retention and strength
• Precision-molded sealing edge to prevent unfiltered air bypass
• Engineered to GM OE tolerances for a correct fit and function

Will this filter fit my GM vehicle and install easily?

ACDelco OE parts like the A3087C are designed and validated by GM engineers, so they match the original part dimensions and mounting points. Installation is usually a simple process accessible to most DIYers and technicians: remove the old element, inspect the housing, seat the new filter, and close the cover.

• Direct-fit replacement for compatible GM models using part number 25839611
• No modification required — retains factory sealing and orientation
• Compatible with standard airbox housings used on the designated vehicles

How long does this air filter last and when should it be replaced?

Service interval depends on driving conditions: typical replacement schedules range from 12,000 to 30,000 miles, with shorter intervals in dusty or heavy-stop driving. Inspect the filter during routine maintenance and replace it sooner if it appears heavily soiled, compressed, or damaged.

• Check at every oil change or at manufacturer-recommended intervals
• Replace sooner in dusty, construction, or off-road environments
• Signs to replace: visible dirt build-up, reduced airflow, or damaged sealing lip

What makes ACDelco OE filters different from aftermarket options?

ACDelco GM Original Equipment parts are engineered, tested, and validated against GM standards, which helps ensure consistent fit, filtration performance, and compatibility with vehicle systems. While many aftermarket filters can be effective, OE parts replicate the factory design and materials specified for the vehicle from the start.

• Designed and validated by GM engineers for Chevrolet, Buick, GMC, Cadillac
• Manufactured to meet or exceed the original part’s filtration and sealing specs
• Backed by OEM supply-chain standards and part-number traceability

Who is this for: The ACDelco A3087C (25839611) is intended for owners and technicians of GM vehicles who want a direct-fit, factory-grade air filter replacement. It suits drivers seeking reliable filtration, a precise fit without modification, and the assurance of parts validated by General Motors — especially helpful for routine maintenance, resale preparation, or restoring factory service intervals.