Hmmm....don't know about the Toy part. I'm normally a Toyota truthful, but it just doesn't seem economical in this situation:

Van's Autoparts: Rebuild Kit: $21.75
Van's Autoparts: (Brand New) Master Cylinder: $30.81

Toyota: (Brand New) Master Cylinder: $128.05 [granted, most here can get 20% off of that with LCA memberships...but still]

I can go through 3 NEW (not rebuilds) Master Cylinders from Van's before I could justify the Toyota costs. If you consider the Time Value of Money; it doesn't justify getting the Toyota even if I have to change one every 2 years. Guess it depends on how much 1 hour of your time is worth.

Max