Skip to product information
SKU:
ZZ3F05197
Same day shipping if ordered by 4PM CST.
40-974 Graded Sensor Air Temperature Fit for Thermo King SB-III Whisper SB-100
$59.19
In Stock
$59.19
Sale price
$59.19
Regular price
Part Number(s)
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
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 SB-III Whisper SB-100
The 40-974 Graded Sensor Air Temperature is a replacement air temperature sensor designed for Thermo King SB-III Whisper and SB-100 refrigeration units, monitoring ambient air temperature to support accurate system control.
Overview
This 40-974 graded sensor air temperature component reads air temperature and sends the signal to the control system, helping the Thermo King unit maintain the setpoint. It serves as a direct replacement for the original sensor, restoring reliable temperature sensing in SB-III Whisper and SB-100 applications.
Built For Performance
- Graded sensor construction ensures precise temperature response matching Thermo King specifications
- Direct replacement design for the 40-974 sensor part number
- Compatible with Thermo King SB-III Whisper and SB-100 control systems
- Durable housing protects against vibration and moisture in truck refrigeration environments
- Plug-and-play wiring connector simplifies installation
Fits These Machines
- for Thermo King SB-III Whisper
- for Thermo King SB-100
On-The-Job Use
- Monitors air temperature within the refrigerated cargo compartment
- Supports accurate temperature regulation for perishable goods transport
- Used in over-the-road truck and trailer refrigeration systems
Specs At A Glance
| Part Number(s) | 40-974 |
| Sensor Type | Air temperature sensor |
| Compatible Brand | for Thermo King |
Good To Know
Q: How do I know this sensor fits my Thermo King unit? A: This sensor is designed for Thermo King SB-III Whisper and SB-100 models, but always verify your unit's serial number and existing sensor part number before ordering.
Q: What happens if the air temperature sensor fails? A: A failed sensor can cause inaccurate temperature readings or system shutdown, so replacing it with the 40-974 sensor restores proper operation and temperature control.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.