What is this part or part#? Thanks
 

Hello All,

can some tell me what part# is this or a reliable substitute? I am not sure the proper name but this hose goes from one side (Top) of the water pump to the firewall/heater core on a 1993 Mazda mx-3 1.8L.

Thanks for your help in advance.

https://cimg2.ibsrv.net/gimg/www.maz...5fce5acb20.jpg

Heater hose