A new one from Toyota I guess. It is an option for almost every part.
I have never fixed it before. If you were to fix it, it would involve heat to rubber "weld" it together again. You could try going to a rubber welding place. Everyone buys a new one, or finds one at the wreckers. Off any car with a T50 I guess:
TA22
TE72
AE86
AE71