cotrecin

I have a belt noise coming from the engine on my 2000 TL. I had it adjusted once already which didn't fix the problem. Today I brought it to Acura Valley Stream and they said that it was due to aftermarket parts and need to replace the compressor, clutch and belt.
Can I get some opinions on this before I actually pay $480 total to fix a squeak?

Car has 47K miles.

JGsTL-S

I've had my belt tensioner replaced twice from belts slipping and squeaks and vibrations. I have 36K on my 02....just had the second job less than a month ago.

JG