Probably the orifice size in the fitting, and yes, it does matter. However, I don't know which is which, all ours are either too old or too new -- the 72 only has two lines (ACC, no door locks) and the W124 has a separate system for the ACC and tranny, only the shut-off is connected to the main line.
Peter _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
