Yamaha - Cover, thermostat - 682-12413-00-1S MerCruiser-4-3L-TKS-Bravo-2004 Mercury OEM lubricants are pressure-tested

Mercury OEM lubricants are pressure-tested

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Yamaha - Cover, thermostat - 682-12413-00-1S MerCruiser-4-3L-TKS-Bravo-2004 Mercury OEM lubricants are pressure-testedYamaha Cover, Thermostat Cooling System Component 682 12413 00 1S Overview When youre working on the cooling side of a Yamaha, the thermostat housing and cover are just as important as the thermostat itself. Ive seen small leaks and cooling issues come from covers that are warped or not sealing right. This piece keeps everything sealed up so the cooling system can do its job without losing pressure. Its simple, but it plays a big role in keeping