Mercruiser Alternator

I am in need of a new alternator.
Current one is a Mando 817119-2.

Any suggetsions on where to purchase?

I see them on eBay anywhere from $70 to $159.

Also, the one I have is 55 amps.
Should I get a higher current one? Maybe 100A?

Re: Mercruiser Alternator

Also, the one I have is 55 amps.
Should I get a higher current one? Maybe 100A?

Click to expand...

Ayuh,... Hi Tony,...
Do you ever have an issue with the batteries Not charging up, during normal outings..??
I mean other than now that the alterator is dead....
If not,... Why upgrade,..??

Unless you're Using more than 55amps, it's really unnecessary...

Re: Mercruiser Alternator

Unless you have a fridge or trolling motors on your boat, there really isn't any need to go higher.

Re: Mercruiser Alternator

The only thing I have thgat draws alot of current is the anchor windlass.

Re: Mercruiser Alternator

And that is only operated for minutes at a time and usually done with the engine on. I assume you have your engine on when you pull up your anchor right? So I wouldn't worry. If you put on a bigger alternator, you really should replace the wire between it and the batteries so with the same size alternator, you wouldn't have to change it.

The people that need the bigger alternator are people that have heavy hitters or run a lot of items with the engine off while anchored and deep battery banks that need to get charged up in a short time. If you anchor overnight and have a lot of lights on and you feel that you are going to get your batteries discharged deeply then maybe you could benefit from it.

Re: Mercruiser Alternator

Thanks bruce.........guess I will stay with the 55A.

Re: Mercruiser Alternator

Just replaced my starter and alternator and got them from DB electrical
if you need the 6 rib belt this is the one if not they have the v belt ones too.

Quality is there as well as the price. J1171 stamped as well

http://www.dbelectrical.com/p-3614-...ercruiser-65-amp-6-groove-pulley-amn0005.aspx

Re: Mercruiser Alternator

Thanks for the info..........

I ordered 1 from ebay.........