As long as the part is in a safe working condition and will fit onto the car the mechanic will install it onto your vehicle. They are not allowed to force you to buy it through them. If they try to tell you that you have to contact your local BBB.
Why don't you ask a mechanic?
If you have to ask you need to get a chiltons repair manual at the library to help you out or take it to a mechanic.
u install it by bringing it to a mechanic
Take it to a mechanic
Get the mechanic to do it
Talk to a trusted mechanic. Most auto part stores can get you a re-manufactured engine.
If you have to ask you aren't up to the task. If you are checking what a mechanic told you then you should find another one you feel you can trust.
with a mechanic
There is no real way to tell. All you can do is ask them and look at the part yourself. If they did you8 should continue to go to that mechanic because a lot of them will not.
go to a mechanic!
take it to a mechanic
take it to a mechanic