doesnt look like a core on the remanufactured OE pump, you're right now that i look at the spot welds on that impellar it makes me wonder. The Gebu brand with the beefy metal impellar is the only one that looks decent now that i look at all. coming up on 10 years of age this year and only had tstat and expansion tank replaced so far with 66k miles, cooling overhaul is in my cards.

nice observations Jeff.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards