Is there an aftermarket thermostat for a 1985 GL1200I?
And that tells us what for a GL1200 thermostat?
I have no idea if there's an equivalent part available in North America.GL1200 Thermostat. Halford's, the UK car parts chain stock the HTK 648 thermostat which fits the GL1200. Thanks to Mark from Ashford in Kent for this tip.