Oil Breather Cap Question

[427 Street]

Originally Posted by FWB

the EC-564, is it just a sticker? remove it....a little Goo-gone
the Napa ones are going to oxidize on you. just be forewarned.....

It looks to be a circular depression in the middle that the sticker sits in perfectly...if you remove the sticker, it might have that circular "dip" in the center. It is tough to tell.

Amazon want $10.99 with free shipping, but there image/drawing shows a push-in style despite having the twist-on part number.

Everyone else wants $14.95-$19.95 for them.

[FWB]

Rockauto shows them for 8.77 each

[FWB]

here's the chrome one that was preferred cheaper...

B6AZ-6766-B Mustang Scott Drake Oil Cap Chrome Push-On Style 1965-1966 | CJ Pony Parts

oh i just realized its push-on

[tboneheller]

The stickers fell off of my Motorcraft breathers after the first wash.

[DougD]

You can use this one from Drake:
B6AZ-6766-B Mustang Scott Drake Oil Cap Chrome Push-On Style 1965-1966 | CJ Pony Parts

With this adaptor for twist-on applications:
C5AZ-6A868-A Mustang Scott Drake Oil Cap Fill Tube Adapter 1965-1973 | CJ Pony Parts

Once they're together, you can't tell there is an adaptor. It's a tight fit, with no rattling or loosening noted to date. They are both reproductions of original Ford parts. They were not original on a Cobra valve cover, but they look very nice. I'm using a pair of these with no PCV and they work fine. The chrome is high quality Drake stuff, and the caps have the FoMoCo logo in the middle for that vintage look.

DougD

[DougD]

Here's a new addition to their catalog - this is probably the correct cap:

C5ME-6766-A Mustang Scott Drake Oil Cap Twist-On Chrome 390 1967 | CJ Pony Parts

It's larger diameter than the ones I linked to above. I may pick up a pair of these myself, although the smaller diameter caps look good, too.