I just took a chance and picked up what looks to be a new or
completely reconditioned Hitachi LR155-20B alternator at a boat show
flea market for $100. I can take it back if I can determine before
Sunday night if it isn't suitable.

The larger alternator option for the Yamaha 2QM engine I have is a
LR155-04. Does anyone know the significance of the numbers after the
dash or if this alternator can be used? I've been googling around on
the internet and can't find anything.

--

Roger Long