This is a brand new propeller housing (Lower casing cap) For Tohatsu Outboard Motor 
M9.9/15/18HP

And Hidea or HDX  2-Stroke 18HP enigine.

Ref.Number: 362-60101-0, 36260101-0M, 362Q60101-0M/1M, 362N60101-0M/1M, 362S60101-0M/1M
Please check the size picture before purchase.