Accurate pressure monitoring is fundamental for diesel engines to run smoothly and reliably — and the Cummins ISX15 / QSX Pressure Sensor (OEM 4921495) provides that critical data for engines from 2010 to 2018. This sensor ensures that vital pressures (such as fuel rail pressure, oil pressure, or boost pressure depending on configuration) remain within specified limits. Choosing the correct OEM-grade sensor helps maintain engine performance, prevent damage, and ensure system safety.
This pressure sensor delivers essential benefits that contribute to engine health and longevity:
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Precise Pressure Monitoring – Continuously measures system pressures and sends accurate data to the engine control module for proper regulation.
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Supports Stable Engine Operation – With reliable pressure feedback, the engine management system can maintain correct fuel delivery, combustion dynamics, and lubrication — avoiding pressure-related issues or performance drops.
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OEM-Grade Fit and Reliability – As OEM 4921495, this sensor meets original manufacturer specifications, ensuring correct installation, durable build quality, and stable performance even under heavy-duty conditions.
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Prevents Pressure-Related Failures – Replacing a faulty pressure sensor reduces the risk of fuel delivery problems, oil pressure faults, boost or turbo malfunctions, and associated breakdowns.
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Improves Diagnostic Accuracy and Maintenance – A functioning sensor reduces false warnings and misleading error codes, making maintenance and troubleshooting more straightforward and reliable.
Replacing an old or failing pressure sensor is a smart move to keep your diesel engine running efficiently and safely. The Cummins ISX15 / QSX Pressure Sensor (OEM 4921495) provides accurate pressure monitoring, supports stable system operation, and helps prevent costly failures. For those seeking a reliable, OEM-spec replacement part, Tamerx offers a quality solution engineered to maintain long-term engine health and dependable performance.









































































































































































































