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I recently found a few more of these bearings through my bearing supplier. He stated that these may be the last in the country. The top caged roller bearing--Mercury number 31-20594 crosses to SJ-7183( I was told it has to be a "SJ"). They also fit several Merc fishing motors from the 50's and 60's. Someone else said they also fit a 25SS. This bearing is obsolete and NLA. I will sell these for $40 each plus shipping. PM or 920-458-0499