- +8613427233834
- 18820999946@163.com
- 13427233834@163.com
Dongfeng Cummins 3971994 engine speed probe sensor
Product Name：Dongfeng Cummins Engine Speed Sensor (Part No.: 3971994)
Applicable Equipment：
- Engines: Dongfeng Cummins 6BT, 6CT, ISBe, ISDe series diesel engines
- Machinery: Dongfeng commercial vehicles, construction machinery, generator sets and other equipment powered by Cummins engines
1 pc
MOQ
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Price
Product Description
Core Parameters：
- Part Number: 3971994
- Type: Magnetic Pickup Speed Sensor
- Structure & Material: Metal threaded housing + magnetic induction probe + waterproof wiring harness connector
- Function: Detects engine flywheel ring gear speed, converting rotational speed into electrical pulse signals for the ECU or dashboard
Function & Application：
- Speed Acquisition: Uses magnetic induction to collect real-time speed signals from the engine flywheel ring gear, accurately reflecting actual engine RPM.
- Control & Display: Transmits pulse signals to the Engine Control Unit (ECU) for injection timing control, idle adjustment, and torque management; also sends signals to the dashboard to display real-time RPM.
- Fault Protection: Triggers ECU protection mechanisms when abnormal speed is detected, preventing engine overspeed or stalling to enhance operational safety.
- Durability & Reliability: Vibration and corrosion-resistant metal housing, plus waterproof wiring harness, ensures stable signal transmission in harsh vehicle/equipment operating environments.
- OEM Compatibility: Precision manufactured to Cummins original equipment standards. Perfectly matches thread size, probe air gap, and electrical interface, enabling direct replacement of the original 3971994 sensor.
Application Scenario：
Suitable for maintenance and replacement of the powertrain system in Dongfeng Cummins series engines and corresponding commercial vehicles/construction machinery. It is a core sensor component to ensure precise engine control and stable operation.
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