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Master Brake Cylinder Cap Gasket

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Old September 11th, 2017, 8:44 PM
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Exclamation Master Brake Cylinder Cap Gasket
I am trying to find the Master Brake Cylinder Cap Gasket... Here are some photos of the van.
Anyone know what part number it would be?
I am trying to pass inspection and need to replace this part.
https://photos.app.goo.gl/gZmm8N8yRbG8vySj2
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Old September 11th, 2017, 9:45 PM
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Model and year might help.
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Old September 12th, 2017, 12:01 AM
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Not an express or savanna.
Maybe an old G van.

May need to hit up and auto wrecker.
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Old September 12th, 2017, 6:54 AM
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Sorry, is a 1995 Chevy G20
This is the actual part that I need, which is proving difficult to find: Brake Master Cylinder Diaphragm - Oshkosh Equipment
Might have to get the entire Master Brake Cylinder box.
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Old September 12th, 2017, 7:35 AM
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Originally Posted by thadfiebich
Sorry, is a 1995 Chevy G20
This is the actual part that I need, which is proving difficult to find: Brake Master Cylinder Diaphragm - Oshkosh Equipment
Might have to get the entire Master Brake Cylinder box.
RockAuto says this will fit: 1995 CHEVROLET G20 5.7L V8 Master Cylinder Cap Gasket | RockAuto, probably the second one of the three.
Attached Thumbnails Master Brake Cylinder Cap Gasket-screen-shot-2017-09-12-8.28.06-am.png  
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Old September 12th, 2017, 7:41 AM
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Thanks for the reply. I actually bought the mentioned part from Advanced Auto Parts, #42103, and it is too small.
The box that holds the brake fluid is quite large, measuring about 6" x 4".
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Old September 17th, 2017, 1:39 PM
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That doesn't seem like the original master cylinder for that van. Most G series vans have a plastic reservoir with 2 compartments. One shallow one deep.
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