Scott-Atwater antique outboard motor water pump impeller 16hp 1958 new old

Description

This is a new old stock Scott-Atwater antique outboard motor impeller.  This is for the engine pump not the
bailer water pump. I'm told there has to be an impeller in the upper chamber of the w/p housing for the cooling system to work correctly.  This is for the 16hp engine with the Bail-A-Matic feature. SA part number is #3985-5100. 9/16th prop shaft size.  Look at the photos and email with questions.  Thanks for looking