OMC NOS Evinrude Johnson 1970 40hp Cover Plate 

Part# 308346

New old stock without packaging

 I purchased a large amount of old parts from a marina that closed shop. Most of the parts were loose in cardboard parts bins. Parts could show shelf wear may be dusty/dirty from sitting out for decades.

Please do your own research before buying to verify if this is the actual part for your boat.