Voltage Regulator Type1 6 Volt Generator
High quality replica of Bosch 6Volt voltage regulator
And yes the cap is interchangeable with your original Bosch cap! (Simply screws on and off)
Inside is high-tech electronics but outside it looks like original. Safety devices built right in. If you mis-wire this regulator it will not work, but it won't break either! Also has protection against moisture and high temperatures