Sorry for asking as Ive searched and cannot fine a definite answer.

What fittings do I need for the rear brake cylinders. The metric fittings that hold the 1/4' brake line to the rear cylinder. Im unsure of the threads for these.

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Thanks for any help anyone and sorry for asking a question that Im sure has been answered before.

 

Since your car is a 91, it's not ¼" line; it's 6mm, bubble flare.

The threads are metric as well.

While you're at the parts store picking up the cyl, have em let you go back to where the RACKS of sticks of brake line are; and just PICK THE ONE THAT FITS. They've got PLENTY of em in all different lengths. Get one that's a little longer than you think you're going to need, and just put a coupla extra bends in it. Not that hard. Really. Don't even have to know any numbers.

Don't outsmart yourself. It's not rocket science, it's just a CAR. Just do what works.

 

ok 6mm bubble flare. thanks. Ill get to it.