Hey everyone,

On the bottom of most of our brake master cylinders there are two numbers, I think they typically look something like "19/25", maybe different numbers based on model..

I've read and been told those numbers indicate the pressures at which the front/rear of the master cylinder operate? Or am I understanding that wrong?

Does anyone have a chart comparing different models of brake master cylinders's pressure markings? I.E 190E 2.6 master vs 420SEL vs E420 vs E500?

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82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
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93 300E 195k