Hopefully someone out there knows the answer to this question. On the OE a/c compressor, as it sits mounted to the motor, on the underside at the connections end (not pulley end) there is a brass fitting with a green glass insert, much like a 'sight glass.' What is this? What function does it serve? Is the part available? TIA

 

bump

 

Believe this is for the Pag oil to be seen, if I remember right

 

Can that part be purchased? If not, anybody got a dead Delphi compressor laying around from which they are willing to sell me this part?

 

Dont have a separate part for that. Just new. 64526918122

https://www.ecstuning.com/Search/SiteSearch/64526918122/

 

Don't see a separate part number for that. If you don't have any luck with a used one we have Delphi and other brands HERE.