Never heard of brake check. I will have to look at carquest. I am running 4 wheel discs and will take a look at what they have. are there different sized lines?
There are different diameter hard brake lines, but all I've ever seen on the early Mustangs was 3/16" diameter tubing.
The common (standard) size SAE inverted flare fitting, for 3/16" hard brake line, is 3/8"-24.
However, in the early Fords there could be 3 other (larger) sized fittings for the 3/16" lines:
1. 7/16"-24
2. 1/2"-20
3. 9/16"-18
It's been my experience that the parts counter people (for the most part) do not know line fitting sizes and more over, I have never come across a parts store yet (some
may exist. I just haven't found any) that have any inverted flare fittings in sizes greater than 3/8"-24 for 3/16" diameter brake tubing. When you start asking for fittings, they get puzzled looks on their faces and when they don't have what you need, they generally point you to the adapters bin.
Adapters will accomplish the task of getting a line from point-A to point-B, but they don't have the clean, professional, look of a direct-connection fitting, and every connection point in a brake system is one more point for a potential leak or failure to occur.
If you elect to make your own lines, and
if you need fittings larger than 3/8"-24, for 3/16" brake tubing, and if you cannot get them from your local parts stores, I do have new 7/16"-24, 1/2"-20 and 9/16"-18 inverted flare fittings available through my website. --So, it's there if you should need them.
