Here for auction is an Oil Pump from a 2000 Yamaha TTR90.  This is not a new part but it is in good usable condition.  

The pump mechanism spins smoothly.  The mounting bolts are included. 

This part should work for similar year models;

I would advise checking with your local dealer for verification.

Please look closely at the pictures as what you see is what you get. 

If you have any questions please ask before buying.