Mercury MK 10-15a-28, Merc 100-150-200-250 Outboard Water Pump Assembly Shaft


This is a water pump assembly shaft for the Mercury Mark 10-15a-28 Merc 100-150-200-250 lower units of the 1960’s. This is the tool that hooks to the drive shaft nut t-handle and is the only way to install the water pump assembly and bearings into the housing on these units.