RobD Posted November 16, 2018 Share Posted November 16, 2018 I have an old '89 Mack Midliner (I believe an M200, but it may be a 250 or 300) that runs great, but I am having a hard time with finding a water pump for it. I believe the part number is 4103-5010450736. Anybody out there know where I may be able to find one that doesn't cost more than the actual value of the truck? Thanks! Rob Quote Link to comment Share on other sites More sharing options...
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