So I've been having a problem with my coolant temp switch in my e23 for some time now. Its a 1984 733i US spec, the switch is a yellow top (so it appears online) that is 45 degrees. Every single search that I have done for months now has yielded me nothing except every retailer saying that the part is no longer available.

What has anyone done to combat this, I need a new switch or something that can take its place. Any ideas?

The following are parts numbers for the switch and can be used interchangeably.12631279716

12631279722

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TIA,
Dave.