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Noah96

11-24-2018 10:04 AM

Master Cylinder

Need to replace my master cylinder in my 1969 3/4 ton vacuum boost truck.
Who has the best replacement should I order through auto parts store, rockauto or someone online?

LockDoc

11-24-2018 10:31 AM

Re: Master Cylinder

Quote:

Originally Posted by Noah96 (Post 8391181)

Need to replace my master cylinder in my 1969 3/4 ton vacuum boost truck.
Who has the best replacement should I order through auto parts store, rockauto or someone online?

RockAuto has them and I have had good luck ordering from them.

LockDoc

davepl

11-24-2018 11:31 AM

Re: Master Cylinder

Only thing I'd suggest is when dealing with brakes, buy new, not reconditioned, and buy a name brand like Delco or Bendix.

AussieinNC

11-24-2018 05:56 PM

Re: Master Cylinder

Critical for you to measure the depth of the hole in the end of the master cylinder piston where it fits against the booster body....and the bore diameter of the original master cylinder....

There are two different bore diameters....

1 1/4" which has a rectangular reservoir cap
AC Delco 18M36288
1 1/8" which has a reservoir cap front and back that are round
AC Delco 18M36246

Buy new unless you like having issues...

:chevy::chevy::chevy:

Noah96

11-24-2018 07:31 PM

Re: Master Cylinder

This is what I've come up with and I put it on order gonna try it out.
https://www.autozone.com/brakes-and-...75_0_2558_2877

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