Disc Brake Master Swap & P valve Question

Well other than the one I mentioned that leaked past the cap gasket I have never had one of the rebuilts I have used leak. Can't say for sure about the ones I installed as a mechanic but never replaced one from a customer coming back. In any case a MC should be a life of the vehicle part and in the vast majority of the cases they are. I certainly wouldn't consider 5 years to be acceptable.

Of all the rebuilt parts you can purchase a MC is the least complicated to rebuild. I started working on cars back in the day when one leaked or plugged up you went to the parts store and got a rebuild kit. Honed the bore, replaced the seals and you were back in business. I still have the brake hone in one of my tool boxes. The controversy back then was did you charge the customer the extra money for a rebuilt to save time or spend the extra time to do it yourself and charge the customer less.

I don't understand what the insurance company has to do with making repairs on your car. Even new cars are serviced under warranty with rebuilt parts. MC's don't fail catastrophically, you know when they going before your brakes fail to work so there is no liability issue there.

I have never seen any parts warranty that was anything other than coverage of the part since they have no control over the installation. The only parts an labor warranties are issued by the organization installing the parts where they have some level of control over the installation.

FWIW, being that brake work is one of the least complicated repair activities you can perform on a vehicle this work will typically be given to the less experienced techs in a garage if you take it some where to be worked on. I know when I started working part time in service stations in high school I got oil changes, tire changes and brake jobs. Wasn't until I had proven myself that I was given more complicate work that required diagnostics.