A/C Compressor locked up, what all do i need to replace?

[DENALI]

Other than having to replace the a/c compressor itself what else do I need to replace at the same time. I plan to use a known good used ac compressor that I have on hand. Thanks

 

[DEEZUZ]

It's probably not the compressor, most likely the clutch pulley. Might be worth to double check

 

[ford_trck]

reciever/dryer and orfice tube, get a can of AC flush and flush out all of you lines too.

 

[Gary]

I think post #2 is probably right, but if the compressor is locked then listen to post #3.

 

[Trqmnstr]

Imo
After you replace the compressor (if need be). Just take it to a shop to have it filled with oil and refrigerant. Ive changed more than a few with new compressors (nvr on a ford tho) and filled with oil as per directions then r31a and had failure. Ive filled with the pre mix **** and had failure. Unless your an AC guru id just have a AC place do the filling.
Im no mechanic but thats been my experience.