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Old 08-22-2019, 02:41 AM   #1
Join Date: Aug 2019
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Default 2004 Maxum XR Thermostat kit

Hi guys,

First time poster. Iíll try to be specific as I can. I have a 3.0 litre 4 cylinder mercruiser alpha one that is running too cold approx 125 degrees where normally is runs around 175 degrees Iíve replaced the temp sensor which didnít work. My local marina says itís my thermostat however does anyone know which thermostat and gasket kit I need to buy? I took the 2 bolts & thermostat cover off and my thermostat appears to under a solid gasket not like the ones I see pictured for my thermostat. Anyone done this job have part numbers I need to order to replace thermostat and gaskets?

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Old 08-22-2019, 11:10 AM   #2
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Join Date: Oct 2011
Location: Chesapeake, VA
Posts: 485

I get part numbers by going to marineengine dot com and entering the engine serial number. That will take you to an IPB, and you can get at least one part number, usually more.

2006 Bayliner BR205
A1 Gen 2 1.47
5.0 carb engine
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Old 08-22-2019, 04:32 PM   #3
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Location: Essex, Maryland
Posts: 7,776

Best to look up by engine serial number.
1997 2400 SCR
5.7 Vortec / Bravo 2
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Old 08-27-2019, 01:09 PM   #4

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Posts: 4,722

The engine model and specs dictate the engine parts, not the vessel make and model.
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