Big yes! It must have one otherwise you will have open spark combined with fumes. Marine spec alternator requires it. Don't cut corners here...
Has the rest of the motor been inspected for damage from overheat ??
I recently bought 31' Chris Craft Commander with twin 1987 Crusader 270s. The starboard alternator was bad and I sent it to
It is Part 5 on this Drawing that i need! Here is a link to the drawing and parts list ...
sounds like a white pump from walmart....the black lead goes to negative on the battery...i forget which of the brown wires are the auto and which is