Archived What size brake lines do we have?

[RON'S RAM]

I have a rusted through rear brake line. It appeared to be 3/16" line but with bigger nuts. After removing it, I found it to be 3/16" lines with 1/4" flare nuts. Is this a dealer only item ? NAPA had 3/16" or 1/4" with their respective size nuts, not mixed with different nuts. The old nuts are not in that great of shape, or I'd use them with new 3/16" line. Any suggestions?

 

[wtfd6]

there are adapters. they should be available at napa or any other parts store. just ask for a 3/16 to 1/4 adaptor. or if the nuts are reusable just reuse them and double flare the new line.


mark

 

[RON'S RAM]

Thanks for the advice but as I said the original nuts are not in that good condition. I went to the dealer today. The short lines are available complete, however the longer lines come as a coil of tubing with no ends or flares. The nuts are not sold seperately, so you'd have to buy the small lines and cut off the nuts to use on the longer lines. The adapters that are available at the parts stores will not fit into the female fittings correctly. They have the 1/4" flare built into it when the original flare is 3/16". The only part of the 1/4" flare that would touch the seat would be the outer lip, not the whole flare. So it's either re-use the old nuts or buy the factory short lines and cut off the nuts to use on standard 3/16" line and double flare it.

Thanks DODGE!

 

[wtfd6]

there are alot of different types of adapters. they are available. just have to find them. i will try to get a part number and post it tomorrow.

 

[RON'S RAM]

Thanks, that would help. The only ones that NAPA showed me would not seat properly.

 

[RON'S RAM]

The job is done. I went back to NAPA & Car Quest and they both had the same adapters. They go from 3/16" line to 7/16" male thread with 1/4" flare machined inside. The block that the adapter would screw into on the truck is made for 7/16" male thread with 3/16" flare. I found a specialty shop that had the correct nuts to put on the 3/16" line. Only one end had that size nut, the other end of the brake line is a standard 3/16" flare nut. The only line that had the odd nut was the drivers side rear short one going to the weight sensing device, and that is available from the dealer. Guess I should have taken it all apart before looking for parts. Hope this helps someone else.