This accessory for Harley-Davidson Panhead models from 1958 to 1964 comprises a 3.5 quart oil tank, which is available with both side and medium filling. The tank is compatible with FXE batteries and can be used in combination with rigids and swinging frames of the above years. Use is also possible with a 4-speed from 1979 to 1984. Ultorganization connections are included, which simplifies the installation.