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Best Price Truck Electric System Parts Oil Pressure Sensor 4921517 for Dongfeng Truck

The Part Number 4921517 is an Engine Oil Pressure Sensor, a critical monitoring component in the engine management system of heavy-duty commercial vehicles. This sensor continuously measures the pressure of lubricating oil within the engine’s main gallery and converts it into an electrical signal sent to the vehicle’s instrument cluster or ECU (Electronic Control Unit), enabling real-time display and warning alerts.

Designed for durability and precision, the 4921517 ensures reliable detection of oil pressure levels — essential for preventing catastrophic engine damage due to low lubrication. It is widely used on diesel engines manufactured by Cummins and installed in Dongfeng Commercial Vehicles and other Chinese-made trucks, buses, and construction equipment.
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  • 4921517

  • Dongfeng

Attribute Description
Product Name Engine Oil Pressure Sensor / Oil Pressure Sending Unit
OEM Part Number 4921517
Function Monitors engine oil pressure and sends signal to dashboard gauge or warning system
Output Type Analog voltage, variable resistance, or switch-type (depending on version)
Application Diesel Engines – Trucks, Buses, Construction Machinery
Installation Location Threaded into engine block near main oil gallery
Sealing Type Integrated copper or aluminum sealing washer
Thread Size M10×1.0 or 1/8" NPT (common variants)
Electrical Connector 2-pin spade or screw terminal (simple connection)
Housing Material Zinc alloy or stainless steel body with heat-resistant insulation
油压传感器-3


油压传感器-2


Parameter Specification
Operating Voltage 24V DC (system supply, typical for commercial vehicles)
Signal Output Type - Variable Resistance (e.g., 10Ω at high pressure → 240Ω at zero)
- Or Switch-Closed Signal when pressure drops below threshold (~3–7 psi)
Pressure Range 0 – 10 bar (0 – 150 psi)
Activation Threshold Typically triggers warning light at ≤ 0.5–1.0 bar (7–15 psi)
Accuracy ±5% full scale
Temperature Range -40°C to +150°C (-40°F to 302°F)
Thread Specification M10×1.0 mm (most common), or 1/8" NPT (verify based on engine)
Connector Type Single-wire or two-terminal design (depends on circuit type)
Compliance Standards Meets GB/T, QC/T, ISO 15855, and SAE J517 standards
Durability Life ≥ 1 million pressure cycles under normal operation


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