Good working genuine Bosch 12 volt 30amp dynamo for a vw aircooled engine. 110mm diameter Fits the 12, 13, 15 and 1600 single and twin port engines from 61ish on If you are running 6 volt and want to convert to 12 you will also need a 12 volt dynamo stand and backing plate to mount this Please look at my other listings for more aircooled parts Thanks for looking
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