Replacement for really noisy coolant pump?

Hi all. My new to me Chinese 6040z machine came with what I think is their stock inline coolant pump. It is REALLY noisy. Given the close proximity of my machine to my bedroom I would really like to replace this pump with something more whisper like. I have been looking around and haven't found anything that looks like a drop in replacement. Can anyone make a suggestion for one? I would like to keep the inline nature due to the small reservoir and the fan driven cooling system that is also connected to the coolant line. While I don't know for sure I do think the pump is most likely a 12V model but if it is not please advise me.

This machine looks exactly like models from CNCZone. It is new to me and only a year or two old.
Regards
Mark MacKenzie, Victoria BC.