If it's made of rubber, replace it.
If it's a fluid, flush the system and change it.
If it's lubricated by a fluid, prime the system.
If it's a normal wear item, replace it.
A car that's been sitting non-op for that long is going to need a lot of love, but once you address all of those issues you should have the joy of all of the parts that didn't get a ton of use!