Thermostatic Expansion Valve
This Hoshizaki 429006-03 equivalent thermistor is a perfect replacement for the one that came with compatible equipment. It also comes with sealant to aid installation.
Disclaimer: "This is a special order part. The lead time for this part could take 7-14 business days before shipping/delivery"
The Hoshizaki TS005 is a replacement thermistor for most KM units.
The Hoshizaki HS-3540 is a replacement thermistor kit for AAC-reach in.