JSM: Thanks! Raw water pump...I went to our local Kubota tractor dealer...This is the Kubota brand and stamped part number:
"D750,D850,D950,V1100,V1200 Water pump Industrial Engines - KUBOTA BRAND PART #15534-73030".
If you google this part number you will get dozens of "who knows where made or quality" cheaper parts all over the internet.
I went to our local Kubota dealer parts department, the Kubota pump is stamped Kubota and the part number is part of the casting. I don't know if it is a Sherwood or Oberdorfer...will advise as the pump was ordered from the Kubota distribution warehouse. The cost is just over $200 plus change.