I have a Cobra regulator that I need to replace. It has a part number tag that says "MTM 8504584" and "600503". It says 0.08WC on it also. I checked the Impco catalog and I don't see any listings for these numbers. The catalog shows the Cobra blue is -1.5WC and the orange is -.5WC. It has a VFF30-2 lock if that matters. The machine has a Nissan H20 engine.
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