Does anyone know the part number for this. Its the rubber bushing that goes around the water tube that goes through the transom.

Thank You

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Also if you can get at it, take an IR temp gun reading of the temp of your oil filter after running on plane. If you have high oil temps then after break in there may be some advantage of using syn due to the superior high temp characteristics of it vs conventional. Which brings up a question, what is normal oil temp on these engines? I'm thinking it should be at least 180-200 to burn off contaminates and fuel dilution but not more than 250* I'd guess....thoughts?

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