Correct Master Cylinder

[cwestra]

I picked up a master cylinder with booster from Napa today for my Cuda.  The booster looks like a match to my original, however, the MC is totally different.  Front and rear reservoirs are the same size, whereas mine has the smaller front one.  And the total size of the MC is significantly smaller.  I am planning to take it back but thought I'd try and get some feedback from here first.  I assume with power disc brakes, this is not the correct MC for my car.

[Alaskan_TA]

Power disk brake cars have one chamber larger than the other.

Stores like NAPA sell one that "fits", it will not allways be the exact application needed.

I went through this about 20 years ago, they sent the wrong one first. Their west coast inventory showed 20 available, I ordered all 20 & I told the guy I would pay for all the ones that came that were actually right.

There was one. 

[Alaskan_TA]

If the booster you took off is an original in rebuildable condition I need one.   

There are places that will rebuild your master cylinder also. White Post Restorations is one, there are probally others.

[cwestra]

Power disk brake cars have one chamber larger than the other.

Stores like NAPA sell one that "fits", it will not allways be the exact application needed.

I went through this about 20 years ago, they sent the wrong one first. Their west coast inventory showed 20 available, I ordered all 20 & I told the guy I would pay for all the ones that came that were actually right.

There was one. 

So that's where the good ones ended up, huh?  lol.

[cwestra]

If the booster you took off is an original in rebuildable condition I need one.   

There are places that will rebuild your master cylinder also. White Post Restorations is one, there are probally others.

I'll send you a picture of it shortly.

[cwestra]

If the booster you took off is an original in rebuildable condition I need one.   

There are places that will rebuild your master cylinder also. White Post Restorations is one, there are probally others.

I ended up rebuilding the original booster since Napa could not get one separate from the MC for some reason.  I'm just going to order the MC and re-using the booster.  Thanks for your help on this though.

[Aracer]

The master cyl. you (showed) want is  for a 1972 Duster, power or manual without the residual valves. For myself I use the big car Ply. Fury master, that is the same power or not, without residual valves in the outlets, as long as it bolts up, an holds more fluid and pedal volume @ 1 -1/32" bore x 1 -9/16" stroke without too much pedal effort I'm happy. 

[cwestra]

The master cyl. you (showed) want is  for a 1972 Duster, power or manual without the residual valves. For myself I use the big car Ply. Fury master, that is the same power or not, without residual valves in the outlets, as long as it bolts up, an holds more fluid and pedal volume @ 1 -1/32" bore x 1 -9/16" stroke without too much pedal effort I'm happy.

That's a good point.  There are probably several other cars that used the MC I'm looking for.  Maybe I should be searching by the P/N (#3461187) of my original MC instead of my vehicle.  It might increase my chances of getting the one I need.  Does anyone know the range of cars and dates that used this MC?

[JH27N0B]

3461187 isn't the part number, that is the casting number.
The Chrysler part number is 3461176.  It was actually a pretty commonly used master cylinder for a long period of time; '71-75 on B, E, C and some light trucks when equipped with power disc brakes.
There are a several aftermarket versions on the market that look pretty similar if you want a new part with warranty, and are indentical in fit and function, such as the Raybestos MC36307.
Also, if you look at rebuilts, you will often find an OEM one with that casting number if a parts store will let you look through a few in their inventory.

[cwestra]

3461187 isn't the part number, that is the casting number.
The Chrysler part number is 3461176.  It was actually a pretty commonly used master cylinder for a long period of time; '71-75 on B, E, C and some light trucks when equipped with power disc brakes.
There are a several aftermarket versions on the market that look pretty similar if you want a new part with warranty, and are indentical in fit and function, such as the Raybestos MC36307.
Also, if you look at rebuilts, you will often find an OEM one with that casting number if a parts store will let you look through a few in their inventory.

Good to know, thanks.