1957 cadillac Brake fluid Reservoir Cap

[57CaddyBiarritz]

My name is Jim and I am looking for a 1957 Cadillac Brake fluid Reservoir Cap . If anyone would have one for sale you may email or call me @ jiml@sarocean.net or my cell number is 9175286213 Thanks John and Jim

[fishnjim]

Hey, Jim.   There's a core on ebay but rough.
I think these are just screw caps made by size, so may find universal one that fits.
So rare, one year, going to be hard to find and who would part without the whole unit?
Could be made.   

[Roger Zimmermann]

If I'm right, this cap was used from 1954 to 1957. Should not be difficult to find

[fishnjim]

Roger, you might be right, but the part list shows a separate number for '57, to be "correct".
I know these guys, sold them parts and gave a core source.   Not my problem to source alternates.

Jim, may try a booster rebuilder too.   They might have extra parts or sources.  The other usual 50s suspects, AllCad, etc.

[Roger Zimmermann]

Roger, you might be right, but the part list shows a separate number for '57, to be "correct".

Because you did the same as me: looking at "master cylinder cap", just to see for 1957: "filler cap or cover, adapter with insert". As you know, the master cylinder is down on the frame, the cap is something different. You have to look at "cap, brake fluid auxiliary reservoir", Gr. 4.651.