The Outerwears Pre-Filter is designed to fit RU-3780 air filters and help protect the primary filter from damaging contaminants. This black pre-filter uses silicone-impregnated micro-mesh material to provide water resistance while allowing consistent airflow for off-road, powersports, and performance applications. Manufacturer part number 20-2237-01 and vendor part number 25-2893 identify this replacement pre-filter.
Dyno and flow-bench testing has shown no significant horsepower loss or reduction in air intake when using the Outerwears pre-filter. Its uniform micron-sized openings allow air to enter while helping block sand, dirt, clay, and water before they reach the main air filter. The material filters particles as small as 0.005 inch in diameter without noticeable airflow restriction.
Features such as dielectrically welded seams help create a durable, dependable cover for compatible RU-3780 filters. The pre-filter is intended for applications requiring added protection in dusty, sandy, muddy, or wet environments. Confirm that your air filter is the RU-3780 model before installation to ensure proper fitment.
Features:
- Fitment: Designed to fit RU-3780 air filters
- Material: Silicone-impregnated micro-mesh is water resistant
- Filtration: Helps filter particles as small as 0.005 inch in diameter
- Protection: Helps block sand, dirt, clay, and water from reaching the primary air filter
- Airflow: Dyno and flow-bench tested with no significant horsepower or airflow loss
- Construction: Dielectrically welded seams provide durable performance
- Color: Black
- Brand: Outerwears
- Manufacturer Part Number: 20-2237-01
- Vendor Part Number: 25-2893