Electric fuel pump, 12 Volt. The poor fuel supply (low gravity level) found on the 1909-1925 Model T's will greatly reduce your engine's power, particularly when traveling up-hill. That's why Henry finally mounted the fuel tank higher on the 1926 and later Models. This American made, special low pressure 12 volt fuel pump will give you much better performance on hills and on level ground. No modifications are required. (NOTE: if you have a 1926-27 model, you may not need this.)