How do you replace the coolant elbows?

[Ibwrong]

Ok I'll check that out tomorrow, Any ideas on what kind of censor I broke? It's right above the elbow and is T shaped. I'm thinking it's some kind of temperature censor.

That not a sensor, thats a vacuum T. Just go to your local auto parts store and get a T with some reducers and vacuum line, should be good to go then.