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ZZ3F05203
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40-974 Graded Sensor Air Temperature Fit for Thermo King SB-IIISR SMX SR SMX-II
$59.19
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
40-974 Graded Sensor Air Temperature for Thermo King
The 40-974 graded sensor air temperature is a replacement temperature sensing component for Thermo King refrigeration units, designed to monitor and transmit air temperature data to the system controller. This 40-974 graded sensor supports accurate climate management for Thermo King SB-IIISR, SMX, SR, and SMX-II units.
Overview
This 40-974 graded sensor air temperature is a direct replacement sensing probe for select Thermo King transport refrigeration systems. It reads ambient or return air temperature and sends that signal to the control module, supporting consistent temperature regulation. The sensor is intended for service professionals maintaining Thermo King SB-IIISR, SMX, SR, and SMX-II units.
Built For Performance
- Precision-engineered thermistor for reliable temperature response
- Constructed with durable housing for resistance to vibration and moisture
- Designed to meet or exceed original specifications for Thermo King systems
- Straightforward installation into the existing sensor mounting location
- Compatible with the 40-974 cross-reference number for ease of identification
Fits These Machines
- for Thermo King SB-IIISR
- for Thermo King SMX
- for Thermo King SR
- for Thermo King SMX-II
On-The-Job Use
- For use in over-the-road trailer refrigeration units
- Supports temperature monitoring during refrigerated transport of perishable goods
- Commonly installed during routine service or repair of Thermo King systems
- Enables accurate control in varying ambient conditions
Specs At A Glance
| Part Number(s) | 40-974 |
| Sensor Type | Air temperature sensor |
| Compatible Systems | Thermo King SB-IIISR, SMX, SR, SMX-II |
Good To Know
Q: How does the 40-974 graded sensor air temperature work? A: The sensor measures air temperature and transmits a resistance signal to the Thermo King controller, which uses that data to regulate cooling cycles for accurate temperature management.
Q: Will this sensor work on other Thermo King models? A: This 40-974 sensor is designed specifically for the listed Thermo King SB-IIISR, SMX, SR, and SMX-II units, so confirm your model before installation.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.