72.93 EUR
Bosch 0258003156 - Lambda sensor with vehicle-specific connector
Lambda sensor for vehicle exhaust systems, measuring oxygen levels with a 3-pole connector.
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Bosch 0258003156 Lambda Sensor
The Bosch 0258003156 is a high‑performance lambda (oxygen) sensor designed for precise monitoring of exhaust gases in modern internal combustion engines. It features a vehicle‑specific connector that ensures seamless integration with the engine control unit (ECU), providing accurate feedback for optimal fuel injection and emission control.
Key Functionalities
- Real‑time oxygen measurement: Continuously measures the ratio of oxygen to nitrogen in exhaust gases, enabling the ECU to adjust the air–fuel mixture for maximum efficiency.
- Rapid response time: The sensor’s ceramic element reacts quickly to changes in exhaust composition, allowing the engine management system to maintain stoichiometric balance during transient driving conditions.
- High durability: Constructed with robust materials that withstand high temperatures and corrosive gases typical of automotive exhaust systems.
- Vehicle‑specific connector: Tailored wiring harnesses match the exact pin configuration required by the manufacturer’s ECU, eliminating the need for adapters or additional wiring.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 0258003156 (also referenced as LS3156) |
| Connector Type | Vehicle‑specific, three‑pole design |
| Operating Temperature Range | -40 °C to +1200 °C |
| Response Time (10–90%) | < 200 ms at 800 °C |
| Signal Output | Analog voltage (0.1–0.9 V) proportional to oxygen concentration |
| Material | Ceramic sensor element with platinum coating; stainless steel housing |
| Installation Location | Pre‑catalyst (upstream) or post‑catalyst (downstream), depending on vehicle model |
Compatibility and Applications
The Bosch 0258003156 is engineered for a wide range of vehicles, particularly those from the Mercedes-Benz family such as the W124, W201, and S124 series. It also serves models from other manufacturers that share similar engine architectures, including certain GMC and older Mercedes‑Benz 190 variants.
Its vehicle‑specific connector eliminates the risk of misconnection, ensuring reliable communication between the sensor and the ECU. This is critical for vehicles equipped with advanced emission control systems where precise lambda readings directly influence catalytic converter efficiency and overall engine performance.
Installation Guidance
- Pre‑installation check: Verify that the exhaust manifold and sensor mounting flange are clean and free of corrosion. Remove any protective caps or seals before installation.
- Alignment: Align the sensor’s connector with the ECU port, ensuring a snug fit without forcing the pins. The vehicle‑specific design guarantees correct orientation.
- Tightening: Use a torque wrench to tighten the mounting bolts to the manufacturer’s specified value (typically between 15–20 Nm). Over‑tightening can damage the sensor housing, while under‑tightening may lead to leaks.
- Electrical connection: Confirm that the wiring harness is securely attached and that all pins are correctly seated. Inspect for any signs of wear or fraying before powering on the vehicle.
Performance Benefits
By delivering accurate lambda readings, the Bosch 0258003156 enables the ECU to:
- Maintain optimal fuel economy by preventing excess fuel consumption.
- Reduce harmful emissions such as CO and unburnt hydrocarbons.
- Extend catalytic converter life through precise air–fuel balance.
- Improve engine responsiveness during acceleration and deceleration.
Maintenance Tips
- Inspect the sensor periodically for signs of soot buildup or physical damage. Clean with a specialized sensor cleaner if necessary.
- Avoid exposure to extreme mechanical shocks; handle the sensor gently during removal and installation.
- Replace the sensor after prolonged operation (typically every 100,000 km) to ensure continued accuracy.
Conclusion
The Bosch 0258003156 Lambda Sensor exemplifies precision engineering tailored for vehicle‑specific applications. Its robust construction, rapid response, and dedicated connector make it an essential component for maintaining engine efficiency and meeting stringent emission standards across a broad spectrum of automotive models.
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 90.08 EUR  65.34 EUR  65.34 EUR  93.80 EUR |
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| Tags | Sensor with vehicle-specific connector |
| Identifiers | |
| Brand |  Bosch is a brand of power tools and appliances. The company was founded in 1886 and produces a wide range of power tools, appliances, and accessories. Bosch tools are known for their quality and durability, and the company is a leader in innovation and design. |
| MPN | Bosch 0893247 |
| Model | Bosch 0258003156 |
| ID | 7006325 |
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