Description
Navistar / International 2503117C1 is a two-pin electric speedometer sensor (3/4 in–16 thread, 6.65 in OAL, rectangular connector) that mounts to the transmission output / tailshaft and feeds vehicle speed to the speedometer and electronic dash on 1990–1998 International 9600 and 9700 Series tractors. The sensor replaces Navistar 2018790 / 2018790C1 / 2503117 / 2503117C1 and Mack 4333-2018790C1 / 4333-2503117C1.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| OEM Number | Navistar 2503117C1 |
| Part Type | Electric Speedometer Sensor |
| Thread Size | 3/4 in–16 |
| Overall Length | 6.65 in |
| Pin Count | 2 |
| Connector Shape | Rectangular |
| Color / Finish | Gold / Black / Grey |
Cross References
This speedometer sensor replaces or is equivalent to the following part numbers:
- Navistar / International: 2503117, 2503117C1, 2018790, 2018790C1
- Mack: 4333-2503117C1, 4333-2018790C1
Applications
This electric speedometer sensor fits the following trucks:
- International 9600 Series (1990–1998)
- International 9700 Series (1990–1998)
Verify your transmission output and existing sensor part number before ordering. Speedometer sensor thread (3/4 in–16) and pin count must match the chassis harness; transmissions retrofitted with electronic speedo from a different chassis may use a different sensor.









