This is what the service bulletin says for replacement.
Water pump 676640-AS
Fan 676700-A Pulley 676701-A
Washer 676707-A need two of them
Key 671943-A Washer 676708-A
Nut 676709-A Lock washer 672021-A need three of them Cap screw 672383-A need three of them
If your water pump was ever replaced you should have these parts already.
A&I has the water pump. Need to order through a dealer to get it.