I figured, rather than just throwing it away, I'll post here. I've got a used K&N air filter that fits the following:

� Yamaha XJ650L Midnight Maxim 1981
� Yamaha XJ650 Maxim 1981
� Yamaha XJ650 Maxim 1982
� Yamaha XJ650 Maxim 1983
� Yamaha XJ650R Seca 1982
� Yamaha XJ750 Maxim 1982
� Yamaha XJ750 Maxim 1983
� Yamaha XJ750M Midnight Maxim 1983
� Yamaha XJ750R Seca 1981
� Yamaha XJ750R Seca 1982
� Yamaha XJ750R Seca 1983

If you want it, it's yours.

Just for fun, I'm replacing the airbox with individual filters.

I'll take it. Let me know how much it will cost to ship.