Airpax 8413 3/8 NPT Normally Closed 115°F Temperature Switch - Onan L634T Compatible (051AA115A-0131)

This is a temperature switch, specifically an Airpax 8413.

It's a normally closed switch that opens at 115 degrees Fahrenheit.

It has a 3/8 inch NPT thread.

This particular one is known to be compatible with Onan L634T engines and cross-references to part numbers like 051AA115A-0131 and 309-0517.

It's in new open box condition.

So, it's unused, but the packaging might be opened or missing.

It might even be a factory second, but functionally it's new.

If you need a reliable thermal switch to close a circuit until it hits 115F, this Airpax unit is a solid choice.

Check the seller's listing for any details on imperfections, but it's essentially a brand new part.