Bel-Ray Foam Filter Oil is a foam air filter oil for all street, off-road, and racing foam air filter applications. Innovative Bel-Ray technology has produced a 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.

• Designed to improve air flow
• Traps microscopic particles to extend engine life
• Waterproof formula prevents clogging when wet
• For foam air filters
• Available in 1L bottle & 400ml aerosol