Briefly looking on our Servis data we have three different motors fitted to these machines dependent on date of manufacture. If you can give me the serial number I can tell you what is the genuine and then you can see which one you want.
Goes like this original part number 998005000 superceded to 720054000 pump with impellor, alternative MTR10053 with impellor but more expensive or 512006200 pump with no impellor. The 5031 etc is connects own coding of whichever pump :rolls: Hope that helps.