Skipper's Locker

Sierra 18-6408 Mercruiser Alternator, 105 Amp

Brand:
Sierra
Part no:
18-6408

Where to buy

Specifications

Output
105 A

This is the Sierra 18-6408, a replacement alternator for Mercruiser stern drives. It is rated at 105 Amp. It replaces the original number 863077T, which is the number to compare with the alternator you are taking off. Nothing is stated about voltage or pulley type, so check those against your engine before relying on it.

Our take

The 105 Amp rating of the Sierra 18-6408 is the number to weigh against your boat's electrical loads. It is stated as a replacement for 863077T on Mercruiser stern drives. Ignition protection is not stated.

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Sources