500E Master Cylinder on a 190E

[JamesDean]

hey everyone,

I was in the shop yesterday and I had them check my brakes and looks like my master cylinder i on its way out..evindenced by the fact that the pedal keeps sinking as i brake...

So I remembered from my list, that I had a 500E master cylinder..or so I thought, So we looked up both a 190E one and a 500E one, the 500E one is cheaper by quite a bit..bout $75.

My question is...will the 500E unit bolt up to my 190E booster?

Dave says that it not so much the booster that matters as it is the master cylinder..

I found this post on here:

"According to the "Tabellenbuch Personenwagen" from April 1991 the brake booster for 190E 2.6 and 500E both are tandem ones with 8"/9" diameter, OEM part numbers are ATE T52/4A/225-210 or Girling LSC 115. They should be identical while the 300TE has a 10" single membrane brake booster.

The master cylinder is different, the 190E 2.6 has the same as a 300TE (15/16" and 3/4") but the 500E got a larger master cylinder with 1" / 3/4".

The overall pressure in the brake line is nearly the same for 300TE and 190E 2.6 - but the 500E produces more pressure for the same weight of your foot."

Just trying to get some thoughts from you guys before I do anything...

Main thing is will the 500E mc fit the 190 booster?