Mercury Outboard 50hp 500 57244A4 Upper Shift Shaft 70s Long Shaft 21" 18hp but probably not the exhaust

but probably not the exhaust manifold stuff)

Your's should look the same

I have more of these around please ask if you need more than one

Please check you manual for ultimate compatibility

(Before they switched to the solid tubular one)

Mercury Outboard 50hp 500 57244A4 Upper Shift Shaft 70s Long Shaft 21" 18hp but probably not the exhaustCame off a Mercury 50hp 500 1970 1976 with Serial# 3820730 4cylinder cyl. 2 Stroke Vintage Kiekhaefer Item Condition and Notes: Good working Condition Slight bend on the shaft, but nothing that should inhibit function (you can kind of see it in the last picture when it is up against the tape measure) Please Inspect Pictures for condition Freshwater Part 21 1 4" Part #'s Upper Shift Shaft Assembly: 57244A 4 Yours should look like this one. Please ask