If you have a Spectra CU369 Radiator...

[saxart]

If you have this radiator (could have been purchased through Rockauto.com or many of the "chain" parts stores around) I could use your help.

This radiator has three fittings on the passenger side tank. Two of them are smaller fittings for a transmission cooler (you can see the little red plugs in my photo below) and one of them is a larger fitting that sticks out about 1" and has a plug in it. (Circled in RED) This larger fitting basically caps off an open hole into the radiator tank. Without this fitting, the radiator won't hold coolant.



Does anybody know what size that fitting is? I removed the fitting from my radiator and I think it got tossed out when a friend was helping clean the garage last week. I contacted Rockauto AND spectra, but neither have any info as to what size this fitting is. It's an odd fitting in that it isn't pipe-thread, rather it seals with an o-ring at the base of the hex.



If anyone just happens to have a junk version of this radiator, I NEED this fitting, or even the thread type and size would work so I can source another plug.