Standard Efficiency Engine Air - Secondary It pays to choose genuine Cat Filters to protect the iron that generates your income. Cat Secondary Engine Air Filters are your last line of defense against dust, dirt and other contaminants that may damage the components of your income-producing machinery. Tasked with protecting the engine while the primary filter is being changed or in the event of a breach in the main filter, this secondary unit plays a critical role in preventing damage due to contaminants. Constructed of durable materials and manufactured to meet Caterpillar’s stringent specifications, these air filters deliver the consistent quality and reliability that Cat owners count on. Because uptime and cost-effective maintenance are critical, Cat Air Filters have been specifically designed to protect and optimize the power of your Cat iron. Working together, genuine Cat Primary and Secondary Filter Elements provide a cost-effective method for maintaining your engine’s integrity and increasing your equipment’s uptime on the jobsite. Attributes: Environmentally friendly Increased airflow with less restriction Serves the critical role of back-up filtration SPECIFICATIONS Efficiency Rating: Standard Efficiency Primary vs Secondary: Secondary Seal Type: Radial Seal COMPATIBLE MODELS Earthmoving Compactor 815F 816F Engineer Support Tractor 30/30 DEUCE Forest Products TK370 TK380 TK371 543 322C TK381 533 558 Wheel-Type Loader 970F 962G II 972G 966G 966F II 950G II 938G II 924GZ 966E 924G 966D Material Handler M325D MH M325D L MH Wheeled Excavator M325C MH W330B Engine - Generator Set 3306 3306B XQ230 Wheel Dozer 814F Asphalt Paver AP-1055D AP-1055B BG-2455C AP-655C AP-1050B BG-2455D BG-260D BG-245C AP-1000B BG-260C BG-2255C AP-1000D Excavator 326F L 328D LCR 330B 325C 324D LN 329D LN 235C 329E L 324E LN 335F 324E L 324D 330D2 M325D L MH 322C 322C FM 325C L 326D2 326F LN 325D L 330F LN 324E 329D2 326D2 L 329D2 L 326F 330D2 L 325D FM 329D L 324D L 330B L 330F M325D MH 324D FM 330F L 325D 326D L 325D MH 329E 330F OEM 558 325C FM 324D FM LL 329D 330B LN 335F LCR 330FMHPU 329E LN 329F L 325D FM LL Integrated Toolcarrier IT62G II IT38G II Engine - Industrial 3306 Wheel Tractor-Scraper 615C 613C II 627E 615C II 611 613C