The Emgo Air Filter, manufacturer part number 12-91100 and vendor part number 78-9314, is designed to provide dependable air filtration for select Honda motorcycles. Built to meet or exceed OEM quality standards, this replacement filter helps protect the engine from airborne dirt and debris while supporting consistent airflow for everyday riding and maintenance.
Fitment includes the 1978 Honda CX500; 1979–1982 Honda CX500C Custom; 1979–1981 Honda CX500D Deluxe; and 1981–1982 Honda GL500 Silver Wing. Verify your motorcycle model and year before ordering to ensure proper application. The filter is supplied individually boxed, with current application information printed on the packaging for convenient identification and installation reference.
Designed as a direct replacement-style air filter for compatible applications, the Emgo 12-91100 is a practical choice for routine service, restoration projects, and replacement maintenance. Its application-specific design supports proper fitment within the original airbox, helping maintain the filtration performance expected from the motorcycle’s factory intake system.
Features:
- Brand: Emgo
- Manufacturer part number: 12-91100
- Vendor part number: 78-9314
- Product type: Replacement air filter
- Quality: Meets or exceeds OEM quality standards
- Packaging: Individually boxed with current application information
- Fitment: 1978 Honda CX500
- Fitment: 1979–1982 Honda CX500C Custom
- Fitment: 1979–1981 Honda CX500D Deluxe
- Fitment: 1981–1982 Honda GL500 Silver Wing
Fitment:
1978 Honda CX500
1979 Honda CX500
1979 Honda CX500C Custom
1979 Honda Cx500D Deluxe
1980 Honda CX500C Custom
1980 Honda Cx500D Deluxe
1981 Honda CX500C Custom
1981 Honda Cx500D Deluxe
1981 Honda GL500 Silver Wing
1982 Honda CX500C Custom
1982 Honda GL500 Silver Wing