Brake Booster Replacement

[Mel]

New booster and master cylinder from Stude Int'l four years ago.  The seating depth in the m/c was less than on the original m/c and the booster was physically a bit different, larger I think, than the one I took off.  Bottom line, the rod on the booster had to be screwed almost all the way in for the proper adjustment.  Now the booster has failed.  So I'm wondering if I got the correct booster and/or m/c from SI or if my original setup was incorrect.

My m/c is good but I'm willing to replace that as well if I can get the right combination.

Recommendations for the booster, m/c and/or both?  Thanks folks.  I'll appreciate any and all input.

[RQA025]

Hello , my 67 have  the original brake booster and i rebuild it with a kit for 1966/70 CHRYSLER B body; but you can find easely a new one

https://themoparshop.com/shop/1966-1970-mopar-b-body-bendix-style-brake-booster/

[Mel]

Thanks for the input.  Good luck to all.

[Mel]

Hello RQA025, NAPA could not find the number NBB5473603.  Further, he did not know Mopar B Body.

Do you, or does anyone, have any other replacement suggestion(s)?

Thanks

 

[mfg]

4 hours ago, Mel said:

Hello RQA025, NAPA could not find the number NBB5473603.  Further, he did not know Mopar B Body.

Do you, or does anyone, have any other replacement suggestion(s)?

Thanks

 

Mopar ‘B’ body….. A 1969 Dodge Charger for example.

[RQA025]

So , i'm gone take a look to my rebuild kit invoice

[RQA025]

https://midwestbooster.com/            here is where i've bought my rebuild kit , item code 2502303 k 

[Mel]

Thanks for all the responses and info.  Good luck all.

[WayneC]

I'm not very knowledgeable on the subject of Avanti brake boosters, but "Booster Dewey" in Portland Oregon rebuilt several Avanti II brake boosters for me many years ago, and I think an original 1963 Avanti booster as well (the boosters may have been the same). I've owned a half-dozen or so Avanti's over the years but have not driven my one remaining Avanti for the past 10 years.

https://www.powerbrakebooster.com/

[Jim78]

Note that the early Avanti boosters have 4 studs, and later models have two studs.

[John D]

On 6/11/2026 at 3:18 AM, WayneC said:

I'm not very knowledgeable on the subject of Avanti brake boosters, but "Booster Dewey" in Portland Oregon rebuilt several Avanti II brake boosters for me many years ago, and I think an original 1963 Avanti booster as well (the boosters may have been the same). I've owned a half-dozen or so Avanti's over the years but have not driven my one remaining Avanti for the past 10 years.

https://www.powerbrakebooster.com/

had the one for my 79 rebuilt by them when they were in Lynnwood WA a couple years ago, 30 minutes from me.  They turned it in 3 days with me dropping it off and picking up. Looks like they just moved 60 miles south.