A missing or worn Woodruff Key will cause your Pulley to slip causing damage to your Alternator, Generator, or Pulley. Replace it with our high quality reproduction for your Air Cooled Volkswagen. Our Woodruff Key is manufactured for a direct fit on your Volkswagen Alternator / Generator Pulley. The Woodruff Key aligns the pulley and fan to the shaft of the generator or alternator and allows them to spin together.
It is commonly lost due to its small size.
EMPI