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Premium OEM-Grade 2872279 5594276 3408531 4921686 Camshaft Position Sensor for Isb Isc Isde Isx and Dodge RAM 5.9L/6.7L Diesel Engines. The 4921686 Position Sensor for Cummins heavy-duty diesel engines and Dodge Ram pickup truck powertrains. Manufactured with industrial-grade magnetic cores, shock-resistant internal circuitry, and fully sealed waterproof housing, the 4921686 sensor resists extreme vibration, high engine bay temperatures. It serves as a 100% drop-in OEM replacement to resolve timing signal failures, eliminate diagnostic fault codes, restore engine startup performance, and prevent unplanned vehicle and equipment downtim.