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White rectangular pleated paper air filter with orange PurolatorONE branding

Purolator

Purolator A21427 PurolatorONE Advanced Air Filter

SKU CH-999G-S6S2N

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

  • Traps 99% of dirt, dust and soot
  • Helps protect engine from harmful debris
  • Can improve acceleration by up to 11%
  • Supports better fuel efficiency with regular changes
  • Recommended replacement every 12 months or 12,000 miles

Engine Protection Filter

The PurolatorONE Advanced Air Filter model A21427 is designed for passenger cars and light trucks. It replaces the original equipment filter to help protect the engine from harmful contaminants.

Filtration Capacity

The filter media traps up to 99% of dirt, dust and soot before they reach the combustion chamber. Replacement is recommended every 12 months or 12,000 miles to maintain airflow and prevent the filter from becoming a restriction.

Performance Benefits

A fresh filter can improve acceleration by up to 11% according to a U.S. DOE study. Regular changes also help prevent engine wear and support better fuel efficiency over the service interval.

Highlights

  • Traps 99% of dirt, dust and soot
  • Helps protect engine from harmful debris
  • Can improve acceleration by up to 11%
  • Supports better fuel efficiency with regular changes
  • Recommended replacement every 12 months or 12,000 miles

Specifications

BrandPUROLATOR

Questions about this item

Will the A21427 fit alongside the original air intake components on my older vehicle?

The PurolatorONE Advanced Air Filter is widely available for most passenger cars and light trucks, so it should integrate with the existing air intake system on compatible older models.

How can I confirm the A21427 is working properly after installation?

You should notice improved engine performance and efficiency; a U.S. DOE study found a new filter can improve acceleration by up to 11% while trapping up to 99% of dirt and debris.

Does the A21427 package include any installation hardware or do I need to buy clips separately?

The product is the air filter element itself; no additional hardware or separate clips are mentioned in the manufacturer highlights for this item.

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