HXE11090 is the genuine John Deere primary (outer) engine air filter element for the S660i Combine, confirmed by John Deere's official parts catalog as the "Elemento Filtrante de Ar Principal" (Primary Air Filter Element) . It serves as the first filtration stage in the engine's air intake system, capturing dust, chaff, and abrasive contaminants before they reach the combustion chamber, and works in tandem with the secondary safety element HXE11091.
