Genuine OEM Part No. 2897654 Knock Sensor, interchangeable with 3607945 and 0261231128, is engineered for Cummins 15N and BGE5.9 series natural gas and diesel engines. This high-sensitivity piezoelectric sensor accurately detects engine knock and abnormal combustion, sending real-time signals to the engine control module to adjust ignition timing and prevent engine damage. Built to strict OEM standards, it delivers reliable, long-lasting performance in demanding operating environments.