It is a thermostat housing, may also be referred to as a heater pipe(s), at least on other models with the 302. You’ll have to buy a used one as they’re no longer made even aftermarket.


Sent from my iPhone using Tapatalk

 

When was the last time the coolant was changed as it looks awfully brown to me. It also looks like those heater hoses are weak and swollen as well.