YG2221G 1/8NPT 1/4NPT 0-10Bars Diesel Engine Oil Pressure Sensor Generator Parts

Product Specifications

• OEM Part Number: YG2221G
• Product Name: Double Terminal Engine Oil Pressure Sensor
• Measuring Range: 0 ~ 1.0MPa
• Alarm Pressure: 0.08MPa
• Thread: 1/8NPT Male Thread
• Terminal Type: Double Screw Terminal
• Shell Material: Galvanized Anti-Corrosion Steel
• Working Temperature: -20℃ ~ 120℃

• Warranty: 6 Months Factory Warranty

Core Technical Parameters

• Measuring Range: 0 ~ 1.0MPa
• Alarm Trigger Pressure: 0.08MPa
• Thread Specification: 1/8NPT External Thread
• Terminal: Double Terminal (One for Instrument Display, One for Low Oil Pressure Alarm Shutdown)
• Working Temperature: -20℃ ~ +120℃
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Wide Application Range

• Stationary diesel generator sets, FG Wilson, Perkins, Cummins standby power units
• Heavy-duty trucks, buses, light commercial vehicles
• Hydraulic excavators, wheel loaders, road rollers, forklifts engineering machinery
• Agricultural tractors, combine harvesters, irrigation water pump diesel power units
• Marine auxiliary generator engines, mobile vehicle-mounted power equipment
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Key Product Features

1. Dual Independent Terminal Design
   One terminal connects to the dashboard oil pressure gauge for real-time pressure value display; the other terminal links to the generator controller to realize low oil pressure automatic shutdown protection, two circuits work independently without mutual interference, perfectly matching genset safety control systems.
    
2. Standard 1/8NPT Universal Thread
   Common mainstream engine mounting thread specification, no thread adapter required, direct screw installation on engine main oil passage, convenient on-site maintenance replacement.
    
3. Precision Pressure Calibration 0.08MPa Alarm Value
   Strict factory fixed threshold calibration, accurately trigger protection when lubrication pressure is insufficient, effectively prevent engine dry-running mechanical damage caused by oil pump failure, oil leakage or filter blockage.
    
4. Galvanized Anti-Corrosion Shell + High-Temperature Resistant Internal Diaphragm
   Resists engine oil corrosion, high-temperature aging and strong vibration, no signal drift or seal leakage after long-term engine operation, stable pressure signal transmission.
    
5. Strict Factory Quality Inspection System
   Every sensor undergoes full-range pressure testing, sealing leak detection and high-low temperature endurance inspection to guarantee accurate measurement and reliable protection performance.
    

Common Equipment Failures Solved

• Original sensor failure causes no oil pressure display on instrument, unable to monitor engine lubrication status
• Low oil pressure protection fails to trigger, engine runs with insufficient lubrication leading to crankshaft, bearing burnout and engine overhaul
• Sensor internal diaphragm aging results in inaccurate pressure signal, false low oil pressure alarm or protection failure
• Seal aging causes engine oil leakage from the sensor mounting position, oil level drop and increased lubrication failure risk
• Single-terminal old sensor cannot simultaneously support instrument display and controller protection function, requiring two separate sensors for wiring