Master Brake Cylinder Repair Kit
Fits 41-66 Jeep & Willys

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Master Brake Cylinder Repair Kit
Fits 41-66 Jeep & Willys
New Master Brake Cylinder Repair Kit

Comes complete with all the major wear items on your frame mounted master cylinder for early Willys.

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: What point is a master cylinder not rebuildable? What should I be looking for?
Question By: Alvin Sernholt on Jan 17 2019 9:10 PM
If the bore of the master cylinder is not smooth and has notching or discoloration, I would not try to rebuild. It has to be able to seal the Dot 3 fluid properly.
Answer By: Willys Jeep Parts Tech on Jan 18 2019 5:57 AM
Questions: Does this kit have 1" cup
Question By: Jim kuenkel on Aug 5 2018 8:14 PM
1" is correct.
Answer By: Willys Jeep Parts Tech on Aug 6 2018 7:44 AM
Questions: Hello I have a 1948 pickup, and it has an aluminum master cyl(Says 'Wagner' on it) Is this the right kit to rebuild my MC? Thanks-
Question By: Tim on Mar 20 2018 1:35 AM
If your master cylinder is aluminum its not original. Someone has replaced it with something. I would go with 805223 and replace whole thing then.
Answer By: Willys Jeep Parts Tech on Mar 20 2018 6:19 AM
Questions: rebuilding a 1951 cj3a. does this master cyl. come with a brake light switch?
Question By: Dennis on Feb 20 2018 7:46 PM
647801 is the part number for the brake light switch. You'll also need the outlet bolt, fitting and crush washers too if your not reusing your old ones. We have those as well.
Answer By: Willys Jeep Parts Tech on Feb 21 2018 5:46 AM
Questions: I ordered a master cylinder repair kit and all the parts are there and look the same as what I removed from my master cylinder. Except it is a smaller diameter. This is for a cj3a. What might be the issue? I have a Wagner Lockheed m/c
Question By: Darrell laird on Sep 30 2017 6:58 PM
Sounds like you may have an unoriginal master cylinder on there. Please call us toll free and we can try to help. You may just want to get part number: 805223
Answer By: Willys Jeep Parts Tech on Oct 2 2017 5:47 AM
Questions: My 1949 CJ-2A has a Wagner Lockheed FE-3111 master cylinder which evidently was on early 1951 M38 Jeeps. Does the master cylinder kit you offer fit this maser cylinder? Thank you!
Question By: John Rentschler on Nov 20 2016 9:40 PM
The later CJ-2a and the M38 used the same master cylinder so this kit will fit the original.
Answer By: Willys Jeep Parts Tech on Nov 21 2016 5:44 AM
Questions: Does this repair kit include the push rod seal (gasket). My push rod gasket or seal going into my master cylinder is not holding pressure.
Question By: Bill Baker on Aug 25 2016 1:31 AM
Yes, this will be a complete kit to seal your master cylinder.
Answer By: Willys Jeep Parts Tech on Aug 25 2016 6:16 AM
Questions: I have a 67 cj 5 and I do not see a master cylinder or a rebuild kit for my jeep on your webpage
Question By: jeff on Jun 22 2014 12:00 AM
You could have either part number: 805223 or 945556 depending on your vehicle.
Answer By: Willys Tech on Jun 23 2014 12:00 AM
Questions: Will this fit a 67 jeepster / V6 /10brakes
Question By: Corey on Sep 26 2012 12:00 AM
You will want to order part number: 945556 for that vehicle.
Answer By: Willys Tech on Sep 26 2012 12:00 AM
Questions: While using the repair kit, I noticed my original set up did not include the tapered rubber washer. Would this washer go in between the metal washer and the piston assembly? Snap ring - metal washer - rubber washer - piston assembly? Thanks.
Question By: Alex on May 26 2016 4:26 AM