In my search for info on coolant systems, i come accross these and thought might be usefull for people:
Here are all the Mazda part numbers for every coolant hose:
radiator hoses:
N3A1-15-185A lower radiator hose
N3A1-15-186 upper radiator hose
turbo coolant hoses:
N3A1-13-536 turbo coolant hose #1
N3A1-13-54X turbo coolant hose #2
AST hoses:
N3A1-15-380C AST to overflow bottle
N3A1-15-184A AST to radiator
N3A1-15-183 AST to coolant neck
throttle body hoses:
N3A1-13-681A upper throttle body
N3A1-13-691B lower throttle body
N3a1-13-692A water pump housing to hard line (behind alternator)
heater hoses:
FD01-61-213B block to firewall hard line (driver side)
FD01-61-212A heater core at firewall
FD01-61-214A water pump housing to hardline (passenger side)
FD01-61-211A hardline to heater core (passenger side)
Hope they could be of some use.