Dorman M39634 Brake Master Cylinder Compatible with Select Ford Models

Installed a few months ago and it’s already leaking and I’m losing braking power

Great fit on my 1990 f150 2wd xlt lariat. Only issue, no bleeder kit included. But there were 2 plastic screw plugs include, i drilled them and plugged in clear fuel line to bench bleed before bolting up my lines. Highly recommend using a line wrench on your line fittings to avoid stripping them like I did. Plug for sensor matched, reservoir included

Put this on my 1990 Ford E150. Had a leak from the start. Tightened and retightened the brake lines multiple times trying to stop the drip. Finally figured out that it wasn't the brake line connections it was the screw in plug with an o-ring on the bottom of the unit. Looked at one at the parts store and they don't have the leakey screw feature. If you look at the nub sticking out from the bottom and it has a screw plugging the hole either go get one that doesn't or put some kind of sealant on the treads before you install. The o-ring alone didn't do the job on mine.

This master cylinder failed while I was driving. Luckily I was pulling into my driveway. I had no brakes. I was going slow enough that I could coast to a stop.

La instalé y no frena cómo quiero , tengo que revisar la válvula pero funciona bien