Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How to Buy a Good Quality Power Brake Booster

How to Buy a Good Quality Power Brake Booster

Good Quality Brake Booster

When you apply your brakes, you’ll feel a pressure – and that feeling is the brake booster doing its job. If you’re not feeling that extra little bit of pressure when you apply your brakes, it’s a good bet that your brake booster is not operating at peak efficiency and needs to be repaired or replaced.

The job of the brake booster starts as soon as you begin to put pressure on the pedal. There are two chambers inside the brake booster that are divided by a diaphragm. Stepping on the gas pedal clears the air from the chambers, vacuum-sucking everything out depending on how hard you’re stepping on the brakes. The harder your foot depresses the brake pedal, the more air is forced out of the chamber.

There are two main types of brake boosters: vacuum and hydraulic. Here are a few pointers for choosing the right brake booster for your vehicle:

  • Hydraulic: Hydraulic brake boosters are generally found in diesel-powered engines and consist of a steering pump that is filled with a hydraulic liquid which is stored in an accumulator. Air pressure is released when you step on the brake pedal, resulting in an excellent level of braking force of up to 2,000 psi. The downside is that this type of booster can decrease horsepower because it uses a fair amount of electric energy to function.

  • Vacuum: Vacuum brake boosters work on air pressure; stepping on the brake pedal forces air out of the diaphragm. The benefit of utilizing a vacuum is that if your vehicle’s engine stalls, the brakes will still work even though you will have to push harder. Check to make sure the units are vacuum-tested to ensure that their performance will be reliable.

Check to see which type of power brake booster your vehicle uses before you attempt to replace it. Keeping your power brake booster in good working order is an important part of your vehicle maintenance.

YourMechanic supplies top-quality power brake boosters to our certified mobile technicians. We can also install a power brake booster that you've purchased. Click here to get a quote and more information on power brake booster replacement.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...


Related questions

Q: Passenger side tire locked up while driving. But will move fine in reverse.

Hi there. The brake caliper seems to have come loose on one side make the caliper rotate with the rotor and sit normal in the reverse direction. Check the caliper bolts and see if one of them had fallen out....

Q: Rear brakes squeak in new 2016 car, but dealership can't hear it

Sure, we'll be happy to help you. I would probably check the brake hardware kit. The hardware kit consist of slide pins and the little shims that the brake pads fit in. There could be some corrosion build up either of those systems...

Q: Advice on buying a used and reliable car to repair at home

Most modern cars are pretty complex. There is a lot of stuff you can do, like care for the brakes and keep up with other maintenance services. But if you want the simplest and easiest carz that isn't going to...