A-AF25122 Filter, Air, Primary (QTY 1)One New Aftermarket Replacement Primary Air Filter Fleetguard AF25122 This primary air filter replaces Fleetguard AF25122 and is designed for heavy duty engine air intake systems on construction and compressor equipment. The filter uses cellulose filter media to capture dust and airborne particles, protecting the engine from premature wear. Compatible with Dynapac compaction equipment, Atlas Copco drilling rigs and air compressors, and Liebherr wheel