This master cylinder repaired my friend's 2004 Jeep Liberty. The front brakes looked up. I used an infrared thermometer to make sure it was both fronts and not just a stuck caliper. The old master cylinder came out immediately and the new one came back. Watch a video on how to "prep" the cylinder before installation. It's simple but important. After installation, simply release the remaining air from the lines by cracking the nuts on the cylinder. It worked great!