Description
PAI 650650 is an aftermarket coolant level sensor that replaces Detroit Diesel OEM 23520380, 23512880, and 23526905 on Series 60 (and compatible Series 50 and 92) engines. Two-pin rectangular connector with 1/4 in NPT thread, 3.33 in overall length. Mounts in the radiator surge tank or coolant reservoir to drive the dash low-coolant warning circuit.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 650650 |
| Part Type | Coolant Level Sensor |
| Connector | 2-pin rectangular |
| Thread | 1/4 in NPT |
| Overall Length | 3.33 in |
| Engine Compatibility | Detroit Diesel Series 60 (also Series 50, Series 92) |
Cross References
This coolant level sensor replaces or is equivalent to the following part numbers:
- Detroit Diesel: 23520380, 23512880, 23526905
- PAI Industries: 650650
- Fortpro: F238862
Applications
This sensor fits the following Detroit Diesel engines:
- Detroit Diesel Series 60 11.1L / 12.7L / 14L (1987–2011 on-highway and industrial)
- Detroit Diesel Series 50 8.5L (transit and on-highway)
- Detroit Diesel Series 92 (8V92, 6V92, 12V92)
Representative vehicles using these engines:
- Class 8 tractors with Detroit Series 60 (Freightliner FLD/Classic/Columbia/Century, Western Star 4900/5900, Kenworth W900, Peterbilt 379) (1990–2011)
- Transit and school buses with Series 50 / Series 60 power
- Marine and industrial gen-set installations using Series 60 / 92
Verify the surge-tank port (1/4 in NPT) and the 2-pin rectangular connector keying before ordering. Some Series 60 cabovers and DDEC-IV/IV+ trucks moved to a different sensor pattern at later EPA cycles.
