Bosch 0258006475 - Lambda sensor with vehicle-specific connector

Bosch 0258006475 – a high‑performance lambda sensor engineered for the precise needs of modern Mercedes-Benz vehicles. This sensor is designed to fit directly after the catalytic converter, providing critical data on exhaust oxygen levels that enable the engine control unit (ECU) to maintain optimal fuel–air mixture and emissions performance.

Key Features

• Vehicle‑specific connector: The sensor includes a proprietary plug that matches the exact wiring harness of selected Mercedes models, eliminating the need for adapters or additional wiring work.
• 4‑wire construction: Two wires supply power (12 V), one wire returns ground, and the fourth carries the analog voltage signal to the ECU. This configuration ensures reliable communication under high temperature and vibration conditions typical of automotive exhaust systems.
• Robust housing: Constructed from heat‑resistant materials, the sensor can withstand temperatures up to 600 °C, guaranteeing longevity even in demanding driving environments.
• Fast response time: The sensor’s design allows it to react quickly to changes in exhaust composition, enabling real‑time adjustments by the ECU for optimal combustion and reduced emissions.
• OEM quality: Manufactured under Bosch’s stringent quality control processes, the sensor meets or exceeds original equipment specifications for Mercedes-Benz vehicles.

Compatibility Overview

The Bosch 0258006475 lambda sensor is tailored for a range of Mercedes-Benz models that feature the C‑class (W203, W204), E‑class (W211, W209), CLK (C209, A209), and SLK (R171) platforms. It is suitable for engines ranging from 1.6 L to 2.3 L with post‑catalytic converter placement.

Installation Highlights

Installing the Bosch 0258006475 is straightforward for technicians familiar with Mercedes-Benz wiring schematics:

1. Disconnect battery to prevent accidental short circuits.
2. Remove the existing lambda sensor by loosening the retaining clamp and gently pulling the sensor out of the exhaust pipe.
3. Insert the new Bosch sensor, ensuring the connector aligns perfectly with the harness. The proprietary plug will lock into place automatically.
4. Secure the clamp and reconnect the battery.
5. Run a diagnostic scan to confirm that the ECU recognizes the new sensor and that no fault codes are present.

Performance Benefits

By delivering accurate oxygen readings, the Bosch 0258006475 lambda sensor enables the engine management system to:

• Maintain a lean or rich fuel mixture as required for optimal combustion efficiency.
• Reduce harmful emissions such as CO, HC, and NOx by ensuring complete fuel burn.
• Improve throttle response and overall drivability through precise air‑fuel control.
• Extend engine life by preventing excessive wear caused by improper combustion.

Reliability & Durability

Bosch’s commitment to quality is evident in the sensor’s construction:

• High‑temperature tolerance: Designed for exhaust environments, it resists thermal degradation and maintains signal integrity.
• Vibration resistance: The sensor housing and connector are engineered to withstand continuous engine vibration without loosening or signal loss.
• Long service life: With proper installation and maintenance, the sensor can operate reliably for many thousands of miles.

Conclusion

The Bosch 0258006475 lambda sensor is a premium component that delivers precise oxygen measurement for Mercedes-Benz vehicles equipped with post‑catalytic converters. Its vehicle‑specific connector, robust design, and OEM quality make it an ideal choice for technicians seeking reliable performance and seamless integration into the engine management system.