This thing is really the heart of your braking system. Basically, when you push the brake pedal, you’re pushing on a piston inside the master cylinder. That piston then pushes brake fluid through the lines to the brakes at each wheel. It builds pressure, and that pressure is what actually clamps down on the rotors or drums to stop the car. It also holds the pressure in the lines when you’re sitting still, so you don’t lose your brake power. Some have one piston, some have two, depending on the vehicle. Think of it as the starting point for everything brake – related. It takes the force from your foot and multiplies it, sending it along to all four corners of the car. Without it working correctly, you simply won't be able to stop. It’s a pretty critical component, clearly. It's also usually mounted right up on the firewall, sort of hidden away. It's important because, well, it controls stopping. If the master cylinder fails, you’ll likely notice if you have a spongy brake pedal, or if it slowly sinks to the floor when you're holding it. Sometimes, you'll get a complete loss of brakes, which is obviously a big deal. It’s something you really don’t want to mess around with. A failing master cylinder acts like a shield slowly crumbling – you might have some braking ability at first, but it’ll steadily get worse. You can find replacements pretty easily, sites like Fixparts Online have a good selection. It’s one of those things that’s worth keeping an eye on and addressing immediately if you suspect an issue. Quality assurance: Brake Master Cylinder (MPN PMD204) comes with a 12-month warranty!

About TRW

TRW, part of ZF, is a trusted supplier of safety systems including braking, steering, and suspension components.

Why Choose TRW?

• TRW parts are made to the same high standards as the original parts your car came with, so you know you're getting quality. • We offer a wide range of parts, covering most popular car makes and models – making it easier to find what you need. • TRW has a long history of innovation and expertise in automotive safety technology – we've been a trusted name for over 100 years. • Choosing TRW gives you peace of mind knowing you’re investing in reliable parts designed for safety and performance. Drive with confidence – choose TRW parts at FixParts Online.