I purchased a used master cylinder and booster online, got it installed at the dealership. It was working for about a week and I noticed it was leaking. I brought it back and the dealership said the part I bought was leaking. Since it was not purchased from Lexus, they will not cover the cost to replace the part which makes sense. I'm just wondering if anyone has replaced a master cylinder with a Prius equivalent or is there a website that can tell me what parts are interchangeable with CT200H. I've read other sites like the IS models that have Toyota equivalent part numbers.