How can I tell if an a/c compressor has a 5/8 or 3/4 suction port without taking the compressor off the engine?


Asked by Oct 30, 2014 at 11:07 AM about the 2000 Chevrolet Cavalier Base

Question type: Maintenance & Repair

My compressor needs replaced on my 2000 chevrolet cavalier. I'm not mechanically savvy so I'm taking it to a professional but they want to charge a lot of money. If I buy the compressor myself along with the orifice and dryer its cheaper. I just need to figure out a way to tell if the compressor has a 5/8ths suction port or a 3/8ths without taking it off the engine and physically measuring the suction port. Will the vin number or Service parts codes help me? The engine is a 2.2 OVH.

4 Answers


First question. Do you have a vacuum pump and manifold gauges to recharge the system? Once you open the a/c system you will let air in. that air has to be vacuumed out before you can recharge it. If you do have the necessary equipment, then i would ask the parts store to see the new compressor and compare it to a photo of your old one. another option is to measure the fitting and ask to see both manifold hose types.


I don't have a vacuum pump or gauges. My ac ran out a long time ago. The reason I'm replacing this compressor is because the pulley is failing. The mechanic I spoke with said that if I can find a pulley and hub he can just replace those parts and keep the old compressor on but I'm having a really difficult time finding the hub. My father in law suggested that I just buy a whole re manufactured compressor but now I'm having trouble figuring out what size.


I've contacted Chevrolet and gave them my vin number in hopes they could find out for me but apparently they got rid of all their information for those vehicles that are 2000 and older. I contacted a chevy dealer and did the same thing but the only results were its either a 3/4 or a 5/8ths.

325!s!C+Clutch/02631/C0328.oap ?model=Cavalier&vi=1358557&year=2000&make=Chevrolet I believe your mechanic is asking for this. it is a clutch,bearing,and pulley kit.

Your Answer

Add photo

Related Questions


Looking for a Used Cavalier in your area?

CarGurus has 1,618 nationwide Cavalier listings and the tools to find you a great deal.


Search Chevrolet Cavalier Questions

Chevrolet Cavalier Experts

#1 John Saffrahn
John Saffrahn
Reputation 2,670
#2 dandyoun
Reputation 1,220
#3 mbar1
Reputation 1,050
View All

Related Models For Sale

Used Honda Civic"
1,247 Great Deals out of 59,025 listings starting at $1,300
Used Ford Focus"
1,263 Great Deals out of 57,397 listings starting at $1,495
Used Chevrolet Malibu"
1,229 Great Deals out of 72,979 listings starting at $695
Used Honda Accord"
1,383 Great Deals out of 78,758 listings starting at $1,395
Used Chevrolet Impala"
987 Great Deals out of 35,893 listings starting at $700
Used Chevrolet Camaro"
840 Great Deals out of 39,078 listings starting at $2,650
Used Honda Civic Coupe"
356 Great Deals out of 16,368 listings starting at $799
Used Toyota Corolla"
1,515 Great Deals out of 67,849 listings starting at $1,295
Used Toyota Camry"
1,731 Great Deals out of 99,035 listings starting at $895
Used Nissan Altima"
1,574 Great Deals out of 88,172 listings starting at $1,195
Used Ford Mustang"
752 Great Deals out of 41,500 listings starting at $900
Used Chevrolet Tahoe"
1,160 Great Deals out of 36,620 listings starting at $1,995
Used Pontiac Sunfire"
560 listings starting at $1,700