The PAI 740231 is an aftermarket oil temperature sensor for Freightliner engine and transmission service positions, replacing Freightliner 06-23464-000. It uses a 1/2"-14 NPT (with sealant) thread and a 2-pin oval connector — the standard Freightliner harness shared by the engine oil temp and transmission oil temp circuits on Cummins ISX/ISM, Detroit DD13/DD15/DD16, and Eaton/Allison transmissions sourced through Freightliner. Signs You Need a New Oil Temperature Sensor Implausible oil-temp reading (pinned high, pinned low, or stuck on a single value) Active fault code for engine or transmission oil temperature circuit Open or short circuit when the sensor is bench-tested for resistance vs. temperature Temp-related derate or check-engine illumination after a cooling-system service Specifications Manufacturer PAI Industries Part Number 740231 Part Type Oil temperature sensor (engine or transmission service position) Thread 1/2"-14 NPT (with sealant) Connector 2-pin oval Overall Length 2.18 in Finish Gold / black housing Cross References This part replaces or is equivalent to the following part numbers: Freightliner: 06-23464-000, PF06-23464-000 PAI Industries: 740231 Automann: 577.46613 Newstar: S-22290 Applications Fits Freightliner trucks using the 06-23464-000 sensor for engine or transmission oil temperature reporting: Freightliner Cascadia, Columbia, Century, Coronado, FLD, Business Class M2 Engine oil temp position on Detroit DD13 / DD15 / DD16 and Cummins ISX / ISM where Freightliner specifies 06-23464-000 Transmission oil temp position on Eaton / Allison transmissions sourced through Freightliner using the 06-23464-000 sensor This sensor is used in both engine-oil and transmission-oil-temp positions on Freightliner trucks. Confirm the part number stamped on the sensor you are replacing and the harness pinout before ordering — Freightliner uses several similar 2-pin oval temperature sensors with different resistance curves and threads.
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