Bosch 0281002474 Rot.-Speed Sensor

Bosch 0281002474 Rot.-Speed Sensor

The Bosch 0281002474 Rot.-Speed Sensor is a high‑performance crankshaft pulse sensor designed for modern internal combustion engines. It delivers precise RPM and position data to the engine control unit (ECU), enabling optimal fuel injection, ignition timing, and overall engine management.

Key Functionalities

• Crankshaft Pulse Generation: Generates a series of electrical pulses proportional to crankshaft speed. These pulses are used by the ECU to calculate engine RPM and determine the exact position of the crankshaft.
• High Accuracy & Reliability: Built with Bosch’s proven inductive sensor technology, ensuring consistent performance across a wide temperature range and under harsh operating conditions.
• Compact Design: The small footprint allows easy installation in tight engine bay spaces without compromising airflow or cooling.
• Durable Construction: Encased in a robust housing that protects against oil, coolant, and mechanical vibrations.

Technical Specifications

Installation & Integration

The sensor is designed for straightforward integration into existing engine assemblies. During installation, the following steps are recommended:

1. Remove the old sensor: Disconnect electrical wiring and unscrew the mounting bolts.
2. Clean the mounting surface: Ensure no oil or debris remains on the crankshaft flange.
3. Position the new sensor: Align the sensor’s magnetic core with the crankshaft gear teeth.
4. Screw in place: Tighten bolts to the manufacturer’s torque specifications.
5. Reconnect wiring: Attach signal, ground, and power leads securely.
6. Verify operation: Use a diagnostic scan tool to confirm pulse frequency matches engine RPM.

Applications & Compatibility

The Bosch 0281002474 is engineered for a broad range of vehicles, particularly those from the Alfa Romeo, Fiat, and Lancia families. Common applications include:

• Alfa Romeo 147, 156, 166 (1.9 L–2.4 L JTD)
• Fiat Doblo, Marea, Multipla, Punto, Strada, Stilo (various engine sizes)
• Lancia Lybra, Thesis (JTD engines)
• Other OEM models that require a crankshaft pulse sensor with high precision and durability.

Performance Benefits

• Improved Fuel Efficiency: Accurate RPM data allows the ECU to optimize fuel injection timing, reducing consumption.
Enhanced Engine Responsiveness: Precise crankshaft position sensing ensures smooth throttle response and reduced hesitation.
• Reduced Emissions: By maintaining optimal combustion conditions, the sensor helps lower exhaust pollutants.
• Long-Term Reliability: Bosch’s quality engineering minimizes failure rates, extending service intervals.

Maintenance Tips

While the sensor is designed for low maintenance, periodic checks can extend its lifespan:

• Inspect wiring for corrosion or damage during routine engine inspections.
• Verify signal integrity with a multimeter or scan tool when diagnosing idle or acceleration issues.
• Avoid exposing the sensor to excessive oil mist or coolant leaks, which can degrade insulation.

Conclusion

The Bosch 0281002474 Rot.-Speed Sensor is a critical component for modern engine management systems. Its combination of precision, durability, and broad compatibility makes it an ideal choice for automotive technicians and enthusiasts seeking reliable performance in Alfa Romeo, Fiat, Lancia, and other OEM vehicles.