1975 50 hp Johnson Gearcase Seal Kit

KurdishAyo

Recruit
Joined
May 27, 2025
Messages
1
Hi All!
Got a 50ESL75B, done all repairs myself and need to tackle the lower unit but having issues finding a seal kit for it. Does anyone know if there is one out there and if not what alternative kit can I use. I was eyeing a kit for a 1989 50hp onwards with part number 0433550 but am hesitant I would be buying the wrong set.

If I have to buy individually each gasket/seal, which ones should I get and for the O-rings can i get one that meets the dimensions of the one i pull out or does it have to be an OEM O-Ring. Also whats your guys experience with those chinese websites like Alibaba, Temu and Aliexpress?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
50,623
I wouldnt order anything from the chinese websites.

get O-rings from a reputable source. I buy from McMaster Carr or my local hydraulic shop, NAPA, Ace Hardware, even your local marine dealer probably has o-rings as well.
 
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