Welch plug P/N 22031 is installed over the pipe plug. Use a sealing compound when installing this onto the upper housing. Replaces OEM 19-42682
or Sierra P/N 18-4273.
87500 GLM aftermarket Mercruiser upper gearcase seal kit
Sealing kit P/N 87500 is required if you are replacing internal parts in the upper gear case. If just replacing the outside plugs, this seal kit
is not required. Replaces OEM 26-32511A1, Sierra P/N 18-2648.
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