How to Replace a Brake Booster

Below guide will teach you How to Replace a Brake Booster . Please follow the instructions carefully.

Things You’ll Need:

  • Combination Wrench Set
  • Socket and Ratchet Set
  • Flare Nut Wrench
  • Flat Head Screwdriver
  • 3/8 in. Drive Ratchet
  • Brake Booster
  • Brake Fluid

Estimated Costs:

  • DIY Costs: Est. $438.60 parts only
  • Shop Costs: Est. $685.17 parts and labor

Image may not be specific to your car


  • With engine still off, depress the brake pedal several times in order to ease the vacuum of brake booster.
  • Now depress and hold the brake pedal and switch the engine on. Observe carefully that either the brake pedal descends or not.
  • Discard the vacuum hose from the brake booster.
  • Disconnect the brake lines from the brake master cylinder. Disconnect the master cylinder from the brake booster. Put stopper onto the lines or fittings to avoid dripping of fluid.
  • Detach the brake pedal from push rod.
  • Told the assistant to hold the brake booster and in a mean while you unbolt the nuts holding the brake booster to the firewall. You can access the nuts from under the dash on the interior of the firewall.
  • Take the brake booster away.
  • Assemble a new brake booster in place of the old one and secure it to the firewall with nuts.
  • Reattach the push rod to the brake pedal. Also, reattach the vacuum hose to the brake booster.
  • Fix the master cylinder to the new brake booster and rejoin the brake lines.
  • In the end, bleed the brakes to finish the repair work.

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