Description
Premium aftermarket replacement air inlet temperature sensor from PAI Industries. The 650662 reads intake air temperature on Detroit Diesel Series 60 engines of the DDEC III era and replaces Detroit Diesel 23515250. It has a 3/8 in -18 NPT thread and a rectangular 2-pin connector.
Signs You Need a New Air Inlet Temperature Sensor
- Active intake air temperature fault codes
- Black smoke under load from incorrect fueling
- Hard starting, particularly in cold weather
- Engine derate triggered by an implausible air temperature reading
- Air temperature reading stuck, missing, or wildly out of range on a diagnostic tool
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 650662 |
| Part Type | Air Inlet Temperature Sensor |
| Engine Compatibility | Detroit Diesel Series 60, DDEC III |
| Thread | 3/8 in -18 NPT |
| Connector | 2-pin, rectangular |
| Overall Length | 2.22 in |
| Core Charge | None — sold outright |
Cross References
This part replaces or is equivalent to the following part numbers:
- Detroit Diesel: 23515250
Applications
This sensor fits Detroit Diesel engines found in:
- Detroit Diesel Series 60 on-highway tractors with DDEC III engine controls
Verify fitment with your engine serial number before ordering. This sensor reads INTAKE AIR temperature — it is not a coolant or oil temperature sensor, and the Series 60 uses separate sensors for those circuits. Confirm the thread and connector shape against the sensor you are removing.
