Bosch 0258017319 - Lambda sensor with vehicle-specific connector

BOSCH 0258017319 Lambda Sensor with Vehicle‑Specific Connector

The Bosch 0258017319 is a high‑performance lambda sensor, also known as an oxygen sensor, designed to be installed directly in front of the catalytic converter. Its primary function is to monitor the oxygen content of exhaust gases, providing critical data that allows the engine control unit (ECU) to maintain optimal air‑fuel mixture and reduce emissions.

Key Technical Features

• 5‑pin connector: The sensor features a five‑pole plug that matches Bosch’s standard vehicle‑specific wiring harnesses, ensuring seamless integration with the ECU and power supply lines.
• Pre‑Catalytic Converter Placement: Located before the catalytic converter, it delivers accurate readings of the exhaust composition, enabling precise fuel trimming.
• Robust Construction: Built to withstand high temperatures (up to 800 °C) and harsh chemical environments typical of automotive exhaust systems.
• Fast Response Time: The sensor’s design allows rapid detection of changes in oxygen levels, which is essential for real‑time engine management.
• Long‑Term Reliability: Bosch’s proven manufacturing processes guarantee durability and consistent performance over the vehicle’s lifespan.

Vehicle Compatibility

The 0258017319 lambda sensor is engineered for a wide range of modern vehicles. Its vehicle‑specific connector ensures that it fits precisely into the harnesses used by major manufacturers, including:

• Ford – Mondeo, Transit, Focus, and many other models.
• Hyundai – i20, i30, Tucson, Elantra, Veloster, and more.
• Kia – Rio, Optima, Sportage, Soul, and others.
• Mazda – various models with similar harness configurations.
• MERCEDES‑BENZ – A‑Class (W176), B‑Class (W246, W242), CLA Coupe (C117).
• SAAB – 9‑5, 9‑3, and other models.
• Land Rover – Range Rover, Evoque, Freelander.
• Other OEMs: GMC, Lincoln, Opel, and select European brands.

Because the connector is vehicle‑specific, installation requires no additional adapters or modifications. The sensor plugs directly into the existing harness, preserving signal integrity and simplifying maintenance.

Installation & Maintenance

1. Remove the Old Sensor: Disconnect the battery, locate the lambda sensor in front of the catalytic converter, and unscrew it using a suitable socket or wrench. Carefully detach the wiring harness.
2. Install the New Sensor: Align the five‑pin connector with the harness pins and secure it firmly. Tighten the sensor housing to the exhaust pipe, ensuring a leak‑free seal.
3. Reconnect Power: Reattach the battery and verify that all connections are tight.
4. ECU Check: After installation, use an OBD‑II scanner to confirm that the ECU recognizes the new sensor and that no fault codes related to oxygen sensing appear.

Routine maintenance involves inspecting the sensor for corrosion or physical damage. Bosch sensors are designed for longevity; however, if performance issues arise (e.g., increased emissions or reduced fuel economy), replacement with a fresh 0258017319 is recommended.

Performance Benefits

• Enhanced Fuel Efficiency: Accurate oxygen readings allow the ECU to fine‑tune the air‑fuel mixture, reducing fuel consumption by up to 5% in some cases.
• Lower Emissions: By maintaining a stoichiometric balance, the sensor helps keep CO₂, NOx, and HC emissions within regulatory limits.
• Improved Engine Longevity: Consistent mixture control reduces engine wear caused by lean or rich operating conditions.
• Diagnostic Support: The sensor’s data is integral to emission testing protocols; a reliable sensor ensures passing compliance checks.

Why Choose Bosch?

Bosch has been a leader in automotive sensor technology for decades. Their commitment to precision engineering, rigorous quality control, and extensive OEM partnerships means that the 0258017319 delivers:

• Consistent Signal Quality: Minimal noise and accurate voltage output.
• High Thermal Stability: Maintains performance across a wide temperature range.
• Global Support Network: Access to technical resources and spare parts worldwide.

Applications Beyond Standard Vehicles

The sensor’s versatility extends to aftermarket tuning, racing applications, and custom builds where precise exhaust monitoring is essential. Its robust design ensures reliable operation even under high‑performance conditions.

Conclusion

The BOSCH 0258017319 Lambda Sensor with a vehicle‑specific connector represents the pinnacle of oxygen sensor technology for modern internal combustion engines. Its precise, rapid response, and seamless integration make it an indispensable component for maintaining optimal engine performance, fuel economy, and emissions compliance across a broad spectrum of vehicles.

Whether you are performing routine maintenance, upgrading your powertrain, or ensuring regulatory compliance, the 0258017319 delivers reliable, high‑quality sensing that keeps your vehicle running efficiently and cleanly for years to come.