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SKU:
ZZ3F05212
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40-974 Graded Sensor Air Temperature Fit for Thermo King SLX400 CSR40 40-871
$59.19
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$59.19
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$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
Graded Sensor Air Temperature for Thermo King
This graded sensor air temperature for Thermo King units provides accurate air temperature feedback for the SLX400 and CSR40 series, serving as a replacement for the 40-974 and 40-871 sensor references. It maintains reliable temperature inputs to the controller, supporting efficient refrigeration operation.
Overview
This 40-974 graded sensor air temperature replacement part measures the temperature of circulating air and transmits that data to the Thermo King microprocessor. It is engineered for Thermo King SLX400 and CSR40 units, providing consistent readings that help regulate cooling cycles. This sensor is intended for commercial refrigeration systems using the 40-974 or 40-871 cross-reference.
Built For Performance
- Graded thermistor element delivers precise resistance changes for dependable temperature data
- Replacement design matches the electrical characteristics of the 40-974 and 40-871
- Sealed construction resists moisture ingress inside the evaporator housing
- Plug-and-play connector reduces installation time in the field
Fits These Machines
- for Thermo King SLX400
- for Thermo King CSR40
Specs At A Glance
| Part Number(s) | 40-974, 40-871 |
| Sensor Type | Graded Air Temperature Sensor |
| Compatible Brands | for Thermo King |
Good To Know
Q: Is this sensor compatible with the original wiring on the SLX400? A: Yes, the connector and pin layout follow the standard Thermo King harness for these series, so you can plug it directly into the existing connector. Confirm the number of wires matches your original sensor before ordering.
Q: What should I do if the temperature reading seems off after installation? A: Check the sensor probe placement and make sure it is not touching the evaporator coil or a metal bracket, as that can skew readings. Also verify that the harness wiring has no breaks or corrosion at the connector.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.