Through trial and error, I found that this brake master cylinder was the perfect replacement for my car's old, worn out one. The installation was a breeze and it instantly improved the responsiveness and overall performance of my brakes .The quality of this product is top-notch and it comes at a reasonable price. The only con I can THINK of is that it may not be compatible with all car models. Overall a great purchase for any performance car owner in need of an upgraded brake system..