Guys, does anyone here know what the thread size is for the screw-in freeze plugs? A couple of pictures for reference. My block came less the plug kit so I'm on the hunt. I think they're probably 1-5/16" UNF-12 O-ring thread? My block is at the shop so not accessible to measure but I'm hoping that someone here knows, maybe a part number, where to purchase. Need 6. I believe they're the same size as on the Indy Maxx blocks.
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