Skipper's Locker

Sierra Alternator 18-6929 for Yanmar, 80A

Brand:
Sierra
Part no:
18-6929

Where to buy

Specifications

Output
80A

Sierra's 18-6929 is a new replacement alternator for Yanmar engines, rated 80A in its name. Sierra says it matches OEM specs and equals or beats OEM output. The fans, pulleys and hardware are plated against corrosion, and marine flame arrestor screens close off open sparks. A wiring harness is supplied as the application requires, which eases installation.

Our take

The flame arrestor screens on the Sierra 18-6929 are there to eliminate open sparks that could start a fire, a sensible feature on a boat. At 80A it is built for Yanmar engines, so match it against your existing alternator before swapping.

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Sources