Re: 1953 Mercury through 1958 Mercury Power Brake Part needed???

[Virgil & Sue Klein]

Archie, these are simply brass fittings that you can get at a good parts store or a good hardware store.  You will need to know the diameters for the fittings and the nipple as well (so it will fit the vacuum hose).  I don’t think you need to have two fittings if you can find one that has a nipple the correct size that will screw directly into the outlet on the manifold.  By the way, 53s had flatheads and did not have Yblocks but probably used a similar fitting to get vacuum to the power brake booster.