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Brake Boosters Identification


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Imported Catalog


Power Brake Parts & Accessories





At Harmon Classic Brakes we specialize and offer the Antique Car Collector community a source for hard to find Power Brake Booster parts. We are leading experts in Brake Booster Repair Kits and provide various brake parts for:

  • Bendix Hydro-Vac – Master-Vac – Power-Vac – Treadle-Vac
  • Delco Moraine
  • Kelsey-Hayes
  • Midland
  • Girling Servo
  • Lockheed
  • Benditalia/Bonaldi

We also specialize in Brake Booster Restoration.


You guys did an amazing job on my brake booster. It was done well within your advertised turn around time and arrived with a fresh coat of paint, looking brand new with new hardware! After install, the booster worked perfectly. I no longer have to pull the pedal back up with my foot and no whistle when I shut off the engine! My old truck is back on the road and I couldn’t be happier! I’d recommend you guys to anyone, thanks again!

Toby W. - Arizona

I just wanted to send a note to THANK YOU for your great customer service and your top shelf quality re-building craftsmanship. You guys are the best. At first I was worried and afraid of sending my brake booster for my 1962 Chrysler Imperial out of state. But after talking to the office staff and the man behind the scenes, I felt comfortable to ship it. After I received my booster back I could not believe the quality of the booster. All new parts, fresh new paint and even new nuts for mounting the booster and master cylinder. I was so excited to see it back home again. I will be sure to use you again and make sure I tell everyone what a great job you do.

John H. - Michigan


I wanted to thank you for the quality Rebuilt Kit and especially for getting us the correct parts for our application.

Alex – Access Classics

I just wanted to inform you that the Booster got here last Thursday night.  I rebuilt it with the parts you sent me, and the instructions given that it would be tricky to get the two hubs off the old diaphragm.  I installed it and now the brakes work properly. 

Thank you guys.

That you responded so quickly and sent me these items free of charge speaks for you.

Al B. - Switzerland

Thank you for helping me out with the Major Repair Kit for the T-Bird we are rebuilding.  When I received the Kit, it had everything we needed to rebuild our customers Midland Booster.

Thank you again for all the help.

Flemings Ultimate Garage


My Booster Kit just arrived.  Your Major Repair Kit has everything I need to repair my Brake Booster.

Thank you.

Joe C. – Austria

Hello George,

Thank you very much for the restoration of my Hydro-Vac Power Brake Booster.  It looks very nice and works great.

Best Regards,

Ruedi - Sweden

We just received your Repair Kit for our Bonaldi.  It has all the component parts we need to rebuild our Bonaldi Brake Boosters.

Thank you.

Hiroaki A. - Auto Craft – Japan


I would like to thank you for the service.  The Booster looks and performs outstanding.  I will pass on the good news!

Kurt B. – Ohio

Harmon Classic Brakes did a complete repair on a Brake Booster from a 1960 Oldsmobile for me.   There service was outstanding.  They went out of their way to restore this hard to find Booster.  I originally sent it to a place in Texas and they just sent the Unit back in pieces, unrepaired with a note saying it could not be repaired.  Harmon took the Booster and found the hard to locate parts to repair it and did not charge more than what was originally quoted even though it turned out to be difficult to rebuild.

Thank you.

Rich B.


Here are some photos of the 1,150-mile road tour I was able to take with 15 of my buddies in my 1959 Maserati 3500 Vignale Spider with the Brake Booster that you rebuilt.  The car ran great and got 15.5 miles per gallon.  In addition, the car required no additional oil.  

We drove from Seattle heading East through the Cascade mountains to the Bavarian Village of Leavenworth.  We then went south to Walla Walla to Coeur d'Alene, Idaho, back through Winthrop and then North through the Cascades.

What a great trip in a great car! Thanks for everything.

Francis M.

Dear Tara,

Thank you for your offer for Power Brakes to join your Dealer Repair Kit Program.

I have found the components in your Kits to be of excellent quality and very complete which makes our reconditioning process much easier.  

I look forward to doing more business with you in the future.

Carl H. – Power Brakes – Australia

Sent my Brake Booster to another rebuilder and had trouble from the beginning.

I then called Harmon Classic Brakes and talked to George.  He knows Brake Boosters.  He sent me the parts to rebuild my Midland Ross Power Brake Booster on my 1964 Plymouth.  I appreciated his help and cooperation in sending me the parts I needed.  I would recommend Harmon Classic Brakes for all your brake repairs.  Nice guy to do business with.

Thanks George.

Jerry B. – Colorado

You guys are fantastic.  Thanks.


We recently purchased a Delco Moraine Booster Repair Kit from you for a 59-61 Pontiac.  Many thanks for the complete Kit as well as the great exploded views.

Dan S.

Man, you guys rock!  Thank for all your help with my 58 Chrysler Windsor.

Jordon P.

I just want to say thanks for the exceptionally good service.  I received my Rebuild Kit very quickly and I am all the way in Sweden.

Joakim S. – Sweden

Hello George,

Thank you very much for your help over the last week.  I really do appreciate your time.  I would like to share the good news with you and that is after disassembling the Booster and cleaning and reassembling it is working perfectly.  

Scott – Kiwi Olds Owner

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