How’s it going guys, 10 4s Woke up lower on the driver side. After the soapy water test have a minuscule leak right above the brass fitting on the purple airline. Is this fix as simple as replacing brass fitting? If so, is there any programming needed? Stealership does not sell the brass fitting alone only the air hose attached with it. RMT only sells what looks like the bottom brass part which is the one that is fine (screws into the strut).

 

The part from RMT is what you need. No programming required.

 

It is very unlikely that the brass fitting itself has failed. What likely has failed is the 0-ring. Try replacing just the 0-ring. It's ez/pz. Consider using a "green" 0-ring that is designed for AC usage. Green 0-rings are much more robust than traditional 0-rings.