Bel-Ray® Foam AirFilter Oil is an aerosol air filter oil for all street, off-road, and racing foam air filter applications. Innovative Bel-Ray technology has produced an aerosol foam filter oil unlike any other. It is easy to apply and improves airflow. Ultra-viscous formula forms an oil barrier to trap micron-sized particles that can cause engine damage. Bel-Ray's waterproof air filter oil prevents clogging when wet.
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