Agree -- they have a good service life unless you boat in lots of sand -- as we do. They should last several years. There is not any alternate source or upgraded ones for Volvo that I am aware of. That is not true for Mercruiser -- there are more suppliers for that, and at least one is better than the factory sourced part. It was also about twice as exepnsive. It used to be a different color to identify it -- but since I have been out of Mercruiser for a couple of years I don't remember all those details and am not sure it is still available.
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DaleG -- West Palm Beach FL
2003 240Horizon -- 5.7Gi -Duoprop
