for safety reasons I would always buy a new m/c. Don't have to have it in a mb box- ATE or whom ever supplies it to benz.

If you wanted to skimp and use a rebuilt caliper- that would be different.

Aerospace quality should be higher than any car stuff- but there again failure rate of new versus rebuilt, I think new will always win.

Michael

Why would that be different?

__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"