Description
Complete replacement sensor assembly designed for Watkins No-Fault 4000 and 6000 heating systems.
Kit Contents: Hi-Limit Safety Sensor, Temperature Monitoring Sensor, plus (2) rubber O-Ring seals featuring updated connector design for 2002 and newer models.
Independent Supplier & Replacement Part Notice
We are an independent parts supplier and are not affiliated with, sponsored by, or endorsed by Watkins, Hot Spring, Caldera, Tiger River, or Solana. These names and their part numbers are used only to identify compatibility.
We offer replacement parts as alternatives to spa-branded parts. When this listing identifies a part as the same original-manufacturer replacement, it is supplied under the component manufacturer’s branding and part number, which may differ from the Watkins or spa-brand label and number. Other compatible alternatives are identified in the individual product listing. Please review the listed specifications, fitment details, and any installation differences before ordering.
| Sensor Application | Hi-Limit & Temperature Control |
| Compatible Brands | Hotspring, Tiger River, Caldera, Watkins Manufacturing |
| Heater Compatibility | No-Fault 4000, No-Fault 6000 |
| Model Years | 2002 and Later (Updated Style Connectors) |
| Package Includes | Two Sensors Plus Two O-Rings |
