Ve-Lab's Smart Ground Wire is the best way to ground a vulnerable cooling system or engine component. Many replacement cooling system or engine components (intake manifolds, water pumps, cylinder heads, freeze plugs, heater cores and radiators) can fail due to electrolysis. Grounding with ordinary wire allows stray electrical energy to return to the protected unit, shortening the life span of engine components, radiators or heater cores, promoting failure. The Smart Ground Wire restricts voltage flow, allowing electrical energy to flow out of, but not back in. Save your radiator, heater core or engine component with the Smart Ground Wire.