Rectifier unit for Honda 74-78 CB550 & 69-78 CB750 models. 5 wire plug, 3 AC leads in and 2 DC leads out. Check fitment info for specific models and also compare to your current unit. Replaces OEM Ref#31700-333-008 & 31700-323-015. Remember, this is a rectifier unit ONLY for replacing the rectifier on models with separate rectifier and regulator units.