✔️COMPATIBILITY: Direct replacement air filter designed for Generac 14KW-20KW Evolution Series home standby generators manufactured from 2013 onwards✔️PART NUMBER: Matches OEM specification 0J8478S for exact fitment and reliable performance in air-cooled engines✔️Air filter for Generac part number:0J8478S 0J8478, filter air element is designed for use with Generac air-cooled generators✔️Fits Generac Rectangle 14kW - 20kW 2013 Evolution Series Generator, Generac V-Twin 990CC and 999CC engine 14-22KW Post 2013.✔️0J8478S air filter fit for most Gene-rac engines used on Gene-rac Generators✔️0J8478 air filter for Air-Cooled Gene-rac, Centurion, Siemens, Honeywell & Eaton Models