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> Woodruff Key for 914-6 Bosch Generator
DennisV
post Aug 31 2025, 11:07 AM
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Can someone tell me what the correct part number / size is for the woodruff key used to secure the fan to a 914-6 Bosch 770W generator? The part is not identified in the catalog.

I had information suggesting it was N-012-710-1 4 x 6.5 mm for '65-77 911. I have tried to install the Porsche supplied part a few times and it is certainly too tall.

None of the alternates I find from the normal suppliers list this use for their woodruff key offerings. Trying to measure the opening in the shaft and the fan, my best guess is it wants 4 x 5.

Thank you.
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