Engine Speed Sensor Revolution Sensor with Pulse Signal 12V / 24V Magnetic / Hall-Effect for ISUZU ELF 4HK1 Engine

Precision-engineered engine speed sensor monitors crankshaft rotational speed, providing critical data to the ECU for precise fuel injection timing and engine management in ISUZU 4HK1 diesel engines.

• OE Quality: Manufactured to strict ISUZU dimensional and electrical specifications for perfect fit and function
• Precision Sensing: High-quality sensing element provides accurate, reliable engine speed data
• Durable Construction: Robust housing withstands extreme temperatures, vibration, and exposure to engine oil
• Reliable Signal Transmission: Precision electrical connector ensures secure, consistent communication with the ECU
• Optimizes Engine Performance: Accurate engine speed data enables precise fuel injection timing for maximum power and efficiency
• Improves Fuel Economy: Proper engine timing optimizes combustion and fuel efficiency
• Ensures Reliable Starting: Accurate sensor data is essential for proper engine start-up
• Restores Drivability: Eliminates rough idling, stalling, and loss of power caused by faulty sensors
• Direct Replacement: Simple plug-and-play installation with OE-spec connector
• Long Service Life: Engineered for reliability in demanding commercial applications

This engine speed sensor is specifically designed for ISUZU vehicles and equipment equipped with the 4HK1 engine. Common applications include:

• ISUZU ELF - Light to Medium-Duty Trucks
• ISUZU NPR - Medium-Duty Trucks
• ISUZU NQR - Medium-Duty Trucks
• ISUZU 700P - Medium-Duty Trucks
• ISUZU FRR - Medium-Duty Trucks

• 4-Cylinder, Inline Diesel
• Displacement: 5.2L (5193cc)
• Turbocharged, Intercooled
• Common Rail Fuel Injection System
• Widely used in ELF, NPR, and 700P series trucks

1. Disconnect battery - Disconnect the negative battery cable before beginning work
2. Locate the engine speed sensor - Identify the crankshaft position/speed sensor on the engine block, typically near the flywheel housing or crankshaft pulley
3. Disconnect the electrical connector - Carefully unplug the wiring harness connector from the sensor
4. Remove the old sensor - Unbolt and remove the old engine speed sensor
5. Inspect the mounting hole - Check the mounting bore for debris, damage, or metal shavings
6. Clean the mounting area - Clean the mounting surface and surrounding area
7. Inspect the O-ring/seal - Check the sensor O-ring for damage; replace if necessary
8. Prepare the new sensor - Inspect the new sensor and verify it matches the original
9. Install the new sensor - Position the new sensor and secure with mounting bolts
10. Check the air gap - Ensure the sensor is properly positioned with the correct gap to the reluctor wheel
11. Connect the electrical connector - Plug the wiring harness into the new sensor
12. Reconnect battery - Reconnect the negative battery cable
13. Clear fault codes - Use a diagnostic tool to clear any fault codes related to the engine speed sensor
14. Start the engine - Start the engine and verify proper operation, smooth idle, and no warning lights
15. Check live data - Monitor live data from the sensor using a diagnostic tool to verify correct readings
16. Test drive - Test drive the vehicle to verify restored engine performance

• Material Verification: Confirms housing and sensing element materials meet OE specifications
• Dimensional Inspection: Housing dimensions, mounting points, and connector pin positions verified against OEM tolerances
• Electrical Testing: Sensor output signal and voltage verified for accuracy across the operating range
• Temperature Testing: Sensor operation verified across the operating temperature range
• Sealing Integrity: Sensor sealing verified to protect internal components from moisture and contaminants
• Visual Inspection: 100% checked for defects, machining flaws, or damage
• Packaged Safely: Protected in anti-static packaging to prevent electrostatic damage during transit

• Neutral export packing or customized packaging available
• Carton or wooden case for safe transportation
• Fast delivery for stock items
• Shipping by Express Air or Sea