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#291750
JOSEPH BRINCAT
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    I searched thru the several size charts that I have. The only thing close on the OD and ID but thicker. is a Suzuki part ( Sierra 18-3000)

    1.7 OD, 0.5 ID, 0.8 high , six blade.

    As for Scott Atwater, all I have is pictures and part numbers, no dimensions. From the pictures your impellor looks like a Scott 493-5100

    Joe B