You are bidding on an OEM Volvo Penta water pump. Please note this is the one with the centering ring for big block 7.4 and 8.1 engines. This is the one that nobody offers, but you must have the centering ring for it to work. These are very hard to find anymore.
It came from a 2001 7.4GI. I kept 2. One on the engine and one spare ready to go if there was failure, but always swapped them out yearly. The bearing is a stainless steel bearing. I sold the boat and am cashing out parts that I kept.