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Johnson 70 hp lower unti plug gasket

R

Riggo21

New member
Can you let me know the part number for the gasket on the lower unit plug? It’s the plug that keeps the lower unit oil in.
 
I had a 1974 70 HP Johnson, needed the same thing. Went to a close by boat and outboard shop, they sold me a couple leather washers that they used on most of their engines. Worked great, and I have a spare or two in case I'd ever need a replacement. I know of no part number for them.
 
Select the year of your motor, then pick the HP. It will open a menu of all subgroups. Scroll down to gearcase.
You will see the drain plug & washer. The same part fits a ton of motors. If you have the magnetic drain plug, with a groove, the factory part is an O ring…Sierra sells 5 packs.
If the drain plug is a plain threaded screw with no groove it uses a flat washer.
However, the flat washer will also work with the grooved plug as it also has a flat surface on the head.
 
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