EZGO Golf Cart 73471G01 Heat Sink for Vehicles Used on 1997-current E-Z-GO Electric TXT, Medalist, MPT (Multi-Purpose Truck) 800, ST Sport, ST Sport II & Clays Car Vehicles Absorbs its own heat and dissipates this energy to prevent overheating within the speed controller Approximate weight: 3.4 lbs.; Material composition: Steel