I just sold my stubby antenna with the intent of replacing it with the original, only to find the uppermost piece is missing.

It's slotted, threaded on the outside...

Antenna Parts.jpg

Looks like the piece furthest left in the above photo, only smaller inner diameter (and maybe black?).

I'd also settle for a part number to see if Mazda can order me one... if anyone knows what it is.

Thank you! -Matt