2015 200 orifice tube line?
 

I have a 2015 200 4cyl that has to have the AC system replaced, the mechanic told me I need the compressor kit ( found on rock auto) and the orifice tube line... He also said there wasn't much difference in the parts from a 6 cyl to 4cyl. Well, from searching for parts online there seems to be a big difference and there are a few diff line assembly's. I am hoping someone can tell me what the orifice tube line would officially be called so I could order the right part.
By the way the mechanic said the only parts they could find was from the dealer which was 1500.00. Found the compressor kit online for between 370- and 420. So I will buy the parts and pay for labor.
Thanks for any help or advice.

the Liquid line