The OEM Cummins Oil Pressure Sensor 4087988 / 4921517 is a critical engine monitoring component designed to measure and transmit real-time engine oil pressure data to the ECU or instrument cluster. Accurate oil pressure readings are essential for protecting the engine from lubrication failure, overheating, and premature internal wear.
Manufactured to Cummins OEM specifications, this sensor delivers precise pressure readings under a wide range of operating conditions, including cold starts, high engine loads, and extended duty cycles. It features a robust housing, high-quality internal electronics, and corrosion-resistant terminals to ensure reliable performance in harsh diesel engine environments.
This oil pressure sensor is a direct replacement for Cummins part numbers 4087988 and 4921517, requiring no modifications during installation. It is widely used across Cummins B5.9 and B6.7 platforms, including engines meeting industrial and on-highway emissions standards such as B129B, B146C, and B147B.
Ideal for preventive maintenance, sensor failure replacement, or engine rebuilds, this OEM sensor helps maintain proper lubrication monitoring, supports engine protection strategies, and ensures compliance with factory performance standards.
✔ PRODUCT FEATURES & COMPONENTS
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Genuine OEM Cummins oil pressure sensor
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High-accuracy oil pressure measurement
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Durable, heat- and vibration-resistant design
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Corrosion-resistant electrical terminals
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Stable signal output for ECU and gauge systems
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Plug-and-play direct replacement
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Designed for continuous diesel engine operation
✅ ENGINE COMPATIBILITY
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Cummins B5.9
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Cummins B6.7
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Cummins B129B
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Cummins B146C
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Cummins B147B
✅ VEHICLE & EQUIPMENT APPLICATIONS
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Cummins-powered trucks and buses
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Industrial and construction equipment
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Agricultural machinery
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Power generation equipment
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On-highway and off-highway diesel applications
✅ KEY FEATURES & BENEFITS
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Provides accurate engine oil pressure readings
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Helps prevent engine damage due to low oil pressure
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Supports ECU diagnostics and warning systems
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Improves engine reliability and longevity
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OEM-grade quality ensures correct calibration
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Easy installation with factory connectors
What does the Cummins oil pressure sensor do?
The oil pressure sensor monitors engine oil pressure and sends data to the ECU or gauge to ensure proper lubrication and engine protection.
Which part numbers does this oil pressure sensor replace?
This sensor replaces Cummins part numbers 4087988 and 4921517.
Is this an OEM Cummins oil pressure sensor?
Yes, this is a genuine OEM Cummins oil pressure sensor manufactured to factory specifications.
Which engines are compatible with this sensor?
This sensor is compatible with Cummins B5.9, B6.7, B129B, B146C, and B147B engines.
