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R-12 vs R-134a Hose
I need to replace the A/C hose on my 84 E30 318i that goes from the compressor to the evaporator. The system has been previously converted to R-134a. There are two hoses listed, R-12 64-53-1-377-821 for $72.50, and R-134a 64-53-8-391-051 fro $262.50.
Can I use the one for the R-12? The only difference I can imagine would be the recharge connection. Can I just use an adapter and save $200?
Then again, there are two different expansion valves. They are the same price but I was wondering what the difference would be. Maybe the size of the internal orifices?
Please let me know what I need to look for when replacing A/C parts. Once I do I will need to have an A/C tech to check everything and charge the system.
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