Home › Forum › Ask A Member › What is this thing, attached to a Mercury KE4 lower unit? › Reply To: What is this thing, attached to a Mercury KE4 lower unit?
July 14, 2025 at 2:53 am
#298162
Maybe it was made by someone who knew that many older Mercury lower units are susceptible to breakage, so they make this piece to add strength and rigidity to the lower unit in attempt to prevent damage.
Another idea: Does it act as a spacer between the propeller and gearbox? If so, maybe something was wrong with the original propeller shaft and a longer shaft was available, so this was used to fill the gap.
Fastwin 18, good idea!
No matter what it is, it is certainly interesting enough to warrant being re-installed on the motor, in my opinion 😁