• Become a Subscribing Member today!

    J3-Cub.com is the largest community of J3-Cub pilots, owners and enthusiasts. With over 1000 active members, we have fostered a vibrant community and extensive knowledge base.

    Access to the J3-Cub.com community is by subscription only. Membership is only $49.99/year or $6.99/month to gain access to this community and extensive unmatched library of knowledge.

    Why become a Subscribing Member?

    • J3-Cub.com hosts a library of over 13 years of technical discussions, J3 data, tutorials, plane builds, guides, technical manuals and more.
    • J3-Cub.com also hosts an extensive library of J3-Cub photos.
    • You will also receive two J3-Cub decals!

    Become a Subscribing Member and access J3-Cub.com in full!

    Subscribe Now

1940 J4A Brakes - Air Associates Master Cylinder AW-21

shop deals on amazon
Advertise with us
Shop deals on ebay
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
hawk13

hawk13

Member
Supporting Member
Joined
Apr 5, 2021
Messages
14
Reaction score
3
Location
Rockdale
Looking for this master cylinder and all internal components. Someone before us honed the ID inconsistently and it leaks with no pressure on it.

Could get by with just the cylinder body (p/n 496 232 or AW-18). We can make the piston.

Or has anyone upgraded to any other type master cylinder? If so, which one?
 
You must log in or register to reply here.

Latest posts

Back
Top