The 194-6725 is a Steel Pressure Sensor (specifically an Oil Pressure
Sensor) used in Caterpillar (CAT) engines and heavy machinery. It provides real-time digital signals to the engine control system to monitor oil pressure changes and prevent engine damage.
Common Vehicle & Engine Fitment
This sensor is a standard component for many high-performance Caterpillar engines and excavators:
. Engines: C15 (MXS, BXS, NXS), C12, C7, C9, 3126B, 3406E, and 3412E.
. Excavators: 322C, 325C, 329D, 330D, 336D, 345C, and 385C.
. Marine: C18, C30, C32, and 3500 series marine engines.
Key Specifications
. Part Number: 194-6725 (Interchangeable with 161-1704, 161-1705, 904-7027).
. Pressure Rating: Designed for high-pressure monitoring up to 1135 kPa.
. Connector: 3-pin triangular connector.
. Thread Size: 7/16"-20 (SAE #4F).
. Material: Durable alloy brass and carbon steel for high-temperature environments.
Installation & Troubleshooting
. Direct Fit: This is a "plug-and-play" replacement; however, always disconnect the battery before installation to avoid electrical shorts.
. Testing: You can test the sensor with a multimeter by checking the voltage output; it typically operates on a 5V DC regulated circuit.
. Symptoms of Failure: Inaccurate oil pressure readings on the dashboard, engine "limp mode," or diagnostic codes related to oil pressure signal voltage.
