PSA389 TRW Brake Booster

This thing basically multiplies the force you apply to the brake pedal. You push, and it takes that relatively small amount of effort and turns it into much stronger pressure on the brake lines, stopping the car. It uses engine vacuum to do that, so it’s really helping you out. It doesn't create the stopping power, you still do that with your foot, but it makes it a whole lot easier. It sits between the brake pedal and the master cylinder. Think of it as a helper. When you press the pedal, it works with the master cylinder to send hydraulic pressure to the brakes at each wheel. Without it, you'd have to push incredibly hard on the pedal just to get the car to slow down, especially in an emergency. It’s a key part of the whole braking system. It’s super important for safety, naturally. If it fails, you'll notice if you have to press the brake pedal much harder than usual – it will feel like power assist is gone. It acts like a shield, protecting you from having to exert a huge amount of force every time you want to stop. It’s not something you want to mess around with, and a failing booster can seriously affect your ability to control the vehicle. You can find replacements pretty easily, sites like Fixparts Online carry a good range, but it’s a job best left to a professional if you’re not comfortable working on brakes yourself. Highly rated and reliable: Brake Booster (MPN PSA389) includes a 12-month warranty!

About TRW

TRW is renowned for its precision-engineered steering parts that meet or exceed OEM standards.

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.