The MC Enterprise 3314471.017MC is a Dometic Air Conditioner replacement "motor run" capacitor. The capacitor sends a regular series of jolts to keep the motor running. Capacitors can sustain damage from excess power and will also wear down to the point where they can no longer hold a charge. SpecsOverall Dimensions: 2-1/8" dia. x 4-5/8"HMicrofarad Rating: 55/15Capacitor Voltage: 370V AC Capacitor Voltage: 370V AC | MC Enterprises MC Enterprise 3314471.017MC Dometic RV Air Conditioner Motor Capacitor, 55/15 MFD