Polaris 2016+ General/Ace/900/Trail/Ranger 1500 HD Air FilterCritical to engine performance and reliability. A clogged air filter can restrict air flow to the engine leading to reduced engine performance. Dirt and debris ingestion can damage the engine leading to reduced engine life or catastrophic failure. Polaris Air Filters keep dirt and debris out of your engine, protecting its lifespan and keeping air cleaner. Polaris recommends changing your air filter at the specified intervals outlined in the owner's