Outerwears 20-1219-03 Pre-Filter for K&N HA-5000 Filter - Red engine-gaskets-seals-head-gaskets 1979 Yamaha XS400-2

1979 Yamaha XS400-2

2007-2009 Suzuki GSX-R750

1996-1997 Polaris Magnum 425 4x4

2018-2021 Can-Am Defender HD8

Outerwears 20-1219-03 Pre-Filter for K&N HA-5000 Filter - Red engine-gaskets-seals-head-gaskets 1979 Yamaha XS400-2K&N Round. Outerwear pre filters are manufactured from a durable polyester material. Material contains uniform micron sized openings that allow air in, yet filters out the unwanted elements, such as sand, dirt, clay and even water. Filters items as small as . 005 in diameter without noticeable air flow restriction. Dyno and flow bench testing has shown no significant loss of horsepower or air intake while using this product. Silicone impregnated micro