GMB is an extremely large reman company doing pumps and fuel components, I stated that to show its a stock casting and maybe bearings and seals with Flow Coolers impeller. I had an Edelbrock and Milodon, Both had GMB castings with proprietary impellers. FWIW the Eddy and Milodon both failed (leaks) the flow cooler is still going strong with more abuse than the other 2.
