Feature: 1. According to original OEM specifications, replacing OEM numbers for reference: 30510-333-013 30520-333-013. 2. Suitable for Honda CB350F CB400F CB500K CB550F CB550K, can provide a tight fit. 3. The spark plug cap can provide comprehensive protection for the spark plugs, the ignition coil brings better ignition performance of the motorcycle. 4. Original standard, can well repair or directly replace the previous old or broken one. 5. Made of high quality aluminum alloy + rubber + ABS material, excellent durability, having stable performance. Specifications: Item Type: Ignition Coil Assembly Material: Aluminum Alloy + Rubber + ABS Color: Black OEM: 30510-333-013 30520-333-013 Fitment: Fit for Honda CB350F Four - 1972-1974 Fit for Honda CB400F Super Sport - 1975-1977 Fit for Honda CB500K Four - 1971-1973 Fit for Honda CB550F Super Sport - 1975-1977 Fit for Honda CB550K Four - 1974-1978 Package List: 2 x Ignition Coils 4 x Accessory Note: Please check the part number of your item, the matching information is just for reference. If you are not sure about the item, please contact us before purchasing to avoid unnecessary return, thank you!