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Reply to "Brake booster"

quote:
Scott, can you tell what is going on with the master in the picture. Why one size connection is larger and tell what size/flare should connect there?


All brake lines should be 3/16 in size. Even the metric lines are darn close and can be flared correctly.

Some masters use different size tube nuts so people don't hook them up backwards.

You can have a 3/16 line with a 3/8-24 tube nut (this is the most common). OR, like in your case, the larger hole is likely 7/16-24. So you would use a 7/16-24 tube nut that is made for a 3/16 brake line.

They have tube nuts in MANY sizes that will fit a 3/16 brake line. The double flare is the same no matter what size tube nut you are using.

Let me know if you need more help or if you have more questions.

Take care, Scott
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