Spectra 1486 Radiator Help
05-17-2016, 08:28 PM
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Spectra 1486 Radiator Help 
I replaced my stock radiator with the Spectra 1486, and I have no idea what the two extra threaded ports are for. The ones with the red thread protectors in the picture. What are they for, and what size thread are they so I can plug them? I tried 1/4NPT since I had one on hand, and that's not it. Any ideas?
