Why can't this seal be had? - JeepForum.com
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post #1 of 17 Old 01-12-2020, 12:53 PM Thread Starter
Ken Goatee
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Why can't this seal be had?

I am baffled,
I have searched so many parts suppliers (local and online) that I can not remember them all.
The master cylinder cover seal is not available for purchase?
Really?
Someone tell me there is a dark corner of the internet where all the cover seals are being kept away from the world.

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post #2 of 17 Old 01-12-2020, 01:18 PM
Kruzin
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You mean this one? Should be able to get it at any Napa or Advance auto parts, or many on-line sources. It's a Dorman #42075.


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post #3 of 17 Old 01-12-2020, 01:27 PM Thread Starter
Ken Goatee
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Wow!
I am certain I tried Dorman.
I just checked Rock Auto, and there it is!
Thank you very much!
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post #4 of 17 Old 01-12-2020, 01:33 PM
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NP. I knew it had to still be available. They used that M/C cover on so many different makes and models for so many years that it should continue to be readily available for the next 50 years or so.

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post #5 of 17 Old 01-12-2020, 02:05 PM Thread Starter
Ken Goatee
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I just went on Dorman's site again,
put in my vehicle info, there was no option for master cylinder gasket or seal.
That's the same problem with all the parts suppliers I tried. I had even tried the Jeep sites in the past.
I understand that Jeep used many parts from other manufacturers.
I guess the lesson here is, if you can't find the part by vehicle, you need to know who made the part.
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post #6 of 17 Old 01-12-2020, 09:56 PM
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Quote:
Originally Posted by Ken Goatee View Post
If you can't find the part by vehicle, you need to know who made the part.
Or what other vehicles used the same part. Old Jeeps don't get the same love as old Chevys and Fords from the parts dealers.

It's not the Voltage, but the Amperage that will kill you.
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post #7 of 17 Old 01-17-2020, 09:38 PM
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Try the Centric brand one. It has ridges along the entire inside edge and cross member that provides a better seal. The Dorman gasket is smooth which can cause air to eventually leak in.
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post #8 of 17 Old 01-18-2020, 11:23 AM Thread Starter
Ken Goatee
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I am having the same problem as most, the fluid leaks out all the time. Which has ruined the paint on the firewall and frame and started rusting.
I'm going to try the forum advice of milling the gasket surface of the master cylinder. Plus I wanted to replace the gasket. I have already bought the Dorman, but that Centric version looks better.
I think I'll get one.
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post #9 of 17 Old 01-18-2020, 11:34 AM
tazdevl35
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Same MC gasket for many years. This is what you want. Dorman carries a whole lot of stuff, intake manifolds to window clips for about anything American. You use the search function, but thats the one you are looking for IIRC.

https://www.dormanproducts.com/p-323...origin=keyword


Napa should be able to get anything Dorman, same with Advanced and Otto Zone..and one of the 3 should stock it, possibly in the generic 'HELP' section of the store.

Make sure the lip of the MC is really clean and straight where the gasket clamps around.

Edit: sorry I I forgot to post the link first time,....DOH!
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post #10 of 17 Old 01-18-2020, 06:09 PM
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Quote:
Originally Posted by 258 View Post
Try the Centric brand one. It has ridges along the entire inside edge and cross member that provides a better seal.

I would put that seal on the top of my list of the one to get. Ridges along the sealing surface will beat a smooth surface every time. It's just better.

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post #11 of 17 Old 01-18-2020, 06:14 PM
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Also make sure the clip is a very tight latch.

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post #12 of 17 Old 01-19-2020, 12:41 AM
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Is the seal the same for regular and power brakes?

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post #13 of 17 Old 01-19-2020, 12:21 PM
tazdevl35
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Should be.
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post #14 of 17 Old 01-19-2020, 01:18 PM Thread Starter
Ken Goatee
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I must say from my own experience the following (for anyone planning to order one of these gaskets).
A year ago I ordered from Summit the Dorman 42095 because it looked right in the photo.
It is to small for MY master cylinder.
I have already ordered and received from Rock Auto the Dorman 42075, as suggested early in this thread.
It IS the correct size for MY master cylinder.
I am still going to try that Centric brand, I hope it turns out to be the correct size. There is no way of knowing from the photo alone.
I hope this helps!
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post #15 of 17 Old 01-19-2020, 02:02 PM
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Quote:
Originally Posted by Ken Goatee View Post
I am still going to try that Centric brand, I hope it turns out to be the correct size. There is no way of knowing from the photo alone.

Good, then you can post measurements of its size so we know if it will fit our MC's.

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