Master Cylinder Outlet Bolt
Fits 41-66 Jeep & Willys

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Master Cylinder Outlet Bolt
Fits 41-66 Jeep & Willys
New Replacement Master Cylinder Outlet Bolt. (1 required per vehicle)

Replace your corroded front outlet fitting on your original frame mounted master cylinder. Helps evenly proportions fluid to your wheel cylinders. Brake light switch screws directly onto front of this fitting.

41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B
55-66 CJ-5
50-52 M38
52-66 M38A1
46-64 Truck
46-64 Station Wagon
48-51 Jeepster
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Availability: In stock

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Questions: When installing the bolt into the master cylinder, does there need to be any thread sealant applied? Also, how many crush washers are used and in what locations pertaining to the master cylinder?
Question By: Logan Davis on Nov 29 2017 8:45 PM
You do not need to use any sealant for the master cylinder. Below is a good diagram on where parts go and the amounts for around the master cylinder. All the parts are clickable so if you click on a part - it'll give you more information. Thanks
Answer By: Willys Jeep Parts Tech on Nov 30 2017 7:59 AM
Questions: I bought the new master cylinder & front disc brake kit and need a brake light switch that would work with this kit. Please help thanks
Question By: Larry Ioimo on Nov 4 2016 8:40 PM
Your original brake light switch will work with our master cylinder kit. Please call us toll free and we can help.
Answer By: Willys Jeep Parts Tech on Nov 7 2016 5:34 AM
Questions: When replacing my master cylinder on a CJ2A, I installed a new brake light switch into a new outlet bolt, using new washers, and a new Y-joint, but brake fluid is leaking from where the switch screws into the outlet bolt. As I continue to tighten it, it continues to leak. How tight should the switch be? Does the switch seat into the bolt? Is there a chance that I will over-tighten it (or already have done so)? Thanks.
Question By: Craig on Jun 13 2016 9:23 PM
It should be very tight. I would check your threads. You really need to make sure that you do not have any leaks there.
Answer By: Willys Jeep Parts Tech on Jun 14 2016 6:39 AM
Questions: When I install this part, should i wrap the thresds with teflon tape?
Question By: Mike on May 28 2015 12:00 AM
You shouldn't have to. Make sure you use the original or new crush washers against your fitting when installing.
Answer By: Willys Tech on May 28 2015 12:00 AM
Questions: do i need a washer to go with the outlet fitting and Master Cylinder Outlet Bolt
Question By: brian on Oct 21 2011 12:00 AM
Yes you would want to order part number: 637606
Answer By: Willys Tech on Oct 24 2011 12:00 AM