the anodized red colored fittings you have in the picture in post 1, are Japanese thread. Your oem lines use a different thread pitch called European, and the replacements with the correct thread pitch will be either anodized blue, or a khaki green in color. If you have the correct thread union, and are just using these as a repair, it's not that big of a deal, but if you're using them to thread into any factory components, you're going to cross-thread/strip the OEM component using the red fittings. Also, you MUST use a proper bubble flare tool to reflare the lines, or they will leak like a seive.