Hello all. I need to replace the brake master cylinder on my 1991 240. I have the classic symptom of the pedal holding pressure for a few seconds them collapsing to the floor. I have access to a working used one which would save me a few bucks. However, this is from a car with ABS and mine is not so equipped. Can I put an ABS master cylinder on a car without ABS? I’m thinking the answer is no, but would like to be sure. Thanks everybody.

 

Anyone have an opinion on A1 Cardone remanufactured master cylinders?

 

there are two different P/N's. my 240 doesn't have ABS either so I can't say what the difference is. on the parts diagrams, the ABS one has extra ports on the side, and the reservoir has a brake fluid level sensor.

8111006 for non-ABS and 8602015 for ABS (both of these numbers supersede older part numbers)

 

They will be different. Please don't buy used master cylinders, they don't like sitting idle and WILL fail very quickly once in service. I know it's expensive (actually they really aren't that expensive) but buy new.

 

A remanufactured master cylinder would have had all the internal rubber replaced so it's essentially brand new except for some dirt on the outside.

 

That makes sense that there would be at least one extra port. I though about it as I was on my way to pick up one.

I did in fact purchase a remanufactured Ate cylinder from O’Reilley Auto Parts for $24.99 with an $8.00 core. There is a lifetime warranty on the part. It didn’t come with a new reservoir, but I was able to clean mine very well.

The bench bleeding, mounting and caliper bleeding all went well. I was gonna use a friend’s power bleeder, but I would have had to go across town to get it, and in Jacksonville, that’s quite a ride. So, I did it the old fashioned way and had my wife pump the brakes. All went well. The pedal is just right! Thanks everyone for all the info.

 

If you'd seen what I've seen with regards "remanufactured" brake cylinders, you wouldn't buy on ever again. I've seen unhoned, corroded bores, unhoned bores with sharp edges that cut seals, swarf in piston bores etc. Just buy new for under $100 and forget about it for another 25 years.