Freightliner 22-54800-000 Coolant Temperature Sensor
The 22-54800-000 is a direct-style replacement coolant temperature sensor made to OEM specifications for Freightliner FLD cabs and other heavy-duty trucks.
This vital component delivers accurate engine temperature data to your gauge, ECM, and cooling fans, helping prevent overheating and maintain top engine health.
Key Benefits
- Exact threads and connector: ½-14 NPT fitting with matching pigtail, ensuring a perfect fit without adaptation.
- Consistent temperature signal: Critical for correct fan control, gauge operation, and engine performance.
- Durable construction: Built to handle the heat and vibration of heavy-duty operating conditions.
- Widely applied: Common replacement for 1998–2003 FLD models and other Freightliner trucks requiring OE accuracy.
Vehicle Fitment
- Freightliner FLD112, FLD120, and FLD132 models (approx. 1998–2003)
- Other PACCAR-based rigs sharing coolant sensor setup
Specifications & Cross-References
| Part No. | 22-54800-000 |
|---|---|
| Thread | ½-14 NPT (standard coolant sensor thread) |
| Connector | 2-pin rectangular pigtail (verify compatibility) |
| Length | Approximately 2.85 inches |
| Condition | New, OE-style replacement |
| Cross-References | PAI 740230, Dorman 505-5203, WA912-18-7872, and several aftermarket codes |
Installation Tips
- Ensure the engine is cool before replacing—this avoids burns and sensor damage.
- Use proper thread sealant if not pre-coated; avoid overtightening to protect the sensor.
- After installation, top off coolant system and verify accurate gauge function during idle and up to temperature.
- If readings are still erratic, check wiring, connector integrity, and ground connection.
Need assistance?
Contact our support team with your truck model, year, and sensor photo for fit confirmation.