I took my car to a mechanic to have the master cylinder replaced . A few hours later I got a call from the auto repair shop and was told that the master cylinder inner seal had ruptured which in turn caused the brake booster to fail due to hydraulic fluid getting into the brake booster, fouling it and causing the car to stall out of service. A simple exchange cost me $620 due to damage and labor and no car for 5 days due to having to ship 2 new parts to Alaska. I have tried to get a refund from the manufacturer Raybestos to cover the cost of a new brake booster as a faulty part resulted in damage to it and they have apologized there is nothing we can do. Spend your extra cash and stay away from this manufacturer. I'm still trying to find a way to get a refund. If I could give it stars I would.