Bel-Ray Foam Filter Oil - Spray W/P 400ml (12/Case Sold Ea)

Bel-Ray Foam Filter Oil is a spray-applied coating for reusable motorcycle air filters that improves airflow while trapping microscopic particles to extend engine life. The waterproof formula resists clogging in wet conditions, making it ideal for V-twin riders who rely on K&N and similar foam filters.

Features

• Improves air flow through foam filters
• Traps microscopic particles to extend engine life
• Waterproof formula prevents clogging in wet weather
• 400ml spray can — treats multiple filters per case

Specifications

• Brand: Bel-Ray
• Manufacturer Part #: 99200-A400W
• UPC: 690509200362
• Size: 400ml spray can
• Weight: 0.89 lbs

Fitment

For use on reusable foam air filters in V-twin motorcycles, including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

What filters does this work with?

Designed for reusable foam filters like K&N and similar aftermarket foam elements. Check your filter type before applying.

How often do I need to reapply the oil?

Reapply when the filter is cleaned — typically every 50,000 miles or when the filter visibly loses its red color.

Will this work on paper filters?

No — this oil is formulated for foam filters only. Paper filters do not require oil treatment.

How much does one 400ml can treat?

One spray can treats multiple foam filters depending on filter size. A standard motorcycle filter typically requires one light coating.