The primary function of an air filter is to deliver both high airflow and dirt protection. Air filters should provide minimum restriction allowing high airflow into the engine because increased airflow means better engine performance. The purpose of this article is to review 3 most popular air filters for my Echo PB-413H leaf blower. This filter (OEM Part # A226000032) … [Read more...] about Non-OEM vs OEM Air Filter for Echo PB-413H Leaf Blowers