Radiator cap help

[brianlowry]

I've run into an interesting problem. My radiator cap won't seal...

Tracing down some serious run-ability issues and it turns out that the radiator cap that I have isn't long enough the springs don't load to make a good seal.

I bought the radiator from genesis auto parts (no website anymore) back in 2010 and it's listed on the order receipt as a "ALL ALUMINUM RADIATOR - 0521AA - FORD BRONCO FULL SIZE ALL ALUMINUM RADIATOR"

Some searching has led me to find that it is a Silla 0521AA radiator, but because I can't find any other info on this specific model and I can't just go out and pick up a new cap for a 1976 EB, I'm looking for a needle in a haystack it seems.

I need the internals of the cap to be around 1" long, but most I've found are 0.75. Any that are 1" only are 4psi when I believe I should be using a 13psi?
Searching for caps for full size broncos only has .75 filler necks as well.

Any suggestions besides buying a new radiator?
Thanks!
Brian

 

[Slowleak]

You might take it to a good radiator repair shop. If they don't have a cap, they might be able to identify what type you need.

 

[56f100bbw]

I bought a new radiator from ABC in Tucson direct from china took awhile to figure it out but new radiator cap and any cap would not seal on tank this was on a dodge diesel pick up plastic tank change out radiator worked great

 

[brianlowry]

Just as a followup. I went to NAPA and we looked through their book of radiator caps and I found one that matched the dimensions that I needed. Little bit of a needle in a haystack, but finally found it.
Thanks for the help with this.

 

[DirtDonk]

Great news Brian. But what was the part number and application?
For others that might need it in the future. And curious if it was the same Dodge diesel that bbw found.

Paul