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White rectangular pleated paper air filter with black rubber seal and PurolatorONE branding

Purolator

Purolator A21428 PurolatorONE Advanced Air Filter

SKU CH-ADZ1-MAM2E

Traps up to 99% of dirt and debris to protect engine performance and improve fuel efficiency

  • Traps 99% of dirt and debris protecting engine
  • Improves acceleration up to 11% per U.S. DOE study
  • Boosts fuel efficiency with clean airflow
  • Helps prevent engine wear through regular replacement
  • Fits most passenger cars and light trucks

Engine protection filter

The Purolator A21428 PurolatorONE Advanced Air Filter is built for drivers who want to shield their engine from airborne contaminants. It traps up to 99% of dirt, dust, soot and other debris that can cause internal wear. Regular replacement helps maintain peak engine performance and efficiency over time. This filter suits most passenger cars and light trucks on the road today.

Installation and service interval

The filter drops into the factory air box during routine maintenance without special tools or modifications. Replacing it every 12 months or 12,000 miles keeps the intake system flowing freely and prevents restriction. A clean element reduces the load on the engine and supports consistent operation. No additional parts are required to complete the swap.

Efficiency and drivetrain benefits

A fresh filter can improve fuel efficiency and may raise acceleration by up to 11% according to a U.S. DOE study. By blocking harmful particles, it helps prevent premature engine wear and protects downstream components. The media is designed to hold a high volume of debris while maintaining airflow. These gains come from restoring the factory intake performance.

Highlights

  • Traps 99% of dirt and debris protecting engine
  • Improves acceleration up to 11% per U.S. DOE study
  • Boosts fuel efficiency with clean airflow
  • Helps prevent engine wear through regular replacement
  • Fits most passenger cars and light trucks

Specifications

BrandPUROLATOR

Questions about this item

How often must the PurolatorONE A21428 be replaced under sustained driving?

Replace every 12 months or 12,000 miles to maintain peak engine performance.

Does the filter create extra airflow restriction or heat once it is running all day?

It traps up to 99% of dirt and debris while maintaining proper airflow for engine efficiency.

What vehicle fitment must the buyer already confirm before installing the A21428?

The filter is widely available for most passenger cars and light trucks; verify your specific application.

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