J2XCO AVR Automatic Voltage Regulator for Generator 6.5kw 7kw 7.5kw 8kw Halfmoon Style AVR for 6.5KW - 8KW Gasoline and Diesel Generator driven by 173F 177F 182F 188F 190F engine Capacitor size 450V 470uF,5.5 inches / 140mm hole to hole on center