This R2C air filter fits the Polaris General, RZR 1000 S, & 2015-Up RZR 900 models Designed for the most grueling off road conditions with 99.992 efficiency - unmatched on ISO Clamp on design provides a more positive seal Oil free filter 47% increase in dust holding over the OEM filter Better filtering over the factory filter on fine dust particles holds dust up to .3 microns Unmatched engine protection and performance Easy to maintain by using a vacuum and/or light compressed air from the inside Filters can be washed then dried for a few days (they will look a little different, but will still filter excellent, don't use compressed air to dry) Part number: 112-1021