Continental aircraft engine tach drive gear bevel, part no. 535900. 

The gear is approved on Continental aircraft engine 470, 520 series.

Could be installed on airboat, homebuilt, experimental engines.

Please review your parts manual for specific application. 

The gear is sold as removed.  It has not been magnafuxed.  It is not certified, no yellow tag. 

 email if you need additional pictures.