Evinrude Johnson 18hp 306210 0306210 Baffle Plate Power Head Outboard 1961 Harmonic Balancer OMC 314438 - Could be

OMC 314438 - Could be used to make this

Upper End Cap is stamped 1161-7815

The V8-22 amplifiers have very visible stamping next to the sticker and I believe were just commonly found on V8 305 5

but I don't see why not)

Evinrude Johnson 18hp 306210 0306210 Baffle Plate Power Head Outboard 1961 Harmonic Balancer OMC 314438 - Could beThis is off a 1961 Evinrude 18Hp Fastwin Outboard Model 5602R (serial# 03666) 2 Two Cylinder Cyl. 2 stroke Boat Motor. Item Condition and Notes: Good Condition Please Inspect Pictures for condition Freshwater Part Part #'s Included Baffle Plate: 306210 0306210 Yours should look like this one. Please ask if you are unsure if this part will work for you. Please send model and serial number. You will receive what is in the pictures. Please inspect