The 763758 water pump first appeared on the ’79 six horse motors and is the dealer replacement for the older 391391 pumps. If I need a kit, that’s all I will use now as they have proven themselves on my old motors.
On the old boards there was some chatter about the small impellers taking a set after sitting for a long time so I took a ’58 CD down from the rafters which had been up there for about four years. It has the newer style pump in it and when I started the motor in the barrel, it pumped like a fire truck. I’m convinced they are OK.
