Bosch oxygen (lambda) sensor 0258017025 — vehicle-specific connector, ready-to-fit OE replacement

Bosch 0258017025 is a ready-to-fit oxygen (lambda) sensor with a vehicle-specific connector that helps the engine control unit monitor exhaust oxygen and optimise the air–fuel mixture.

This Bosch lambda sensor is designed as a direct-replacement part for compatible vehicles, combining Bosch’s OE-level testing and continuous development. It measures oxygen content in exhaust gases and sends voltage signals to the ECU so the engine management system can adjust fuel delivery for cleaner combustion and stable idling. The sensor comes installation-ready with a vehicle-specific connector to simplify fitment and reduce wiring conversions.

How does the Bosch lambda sensor improve engine performance?

The sensor provides real-time oxygen readings that the ECU uses to fine-tune the air–fuel ratio, supporting smoother running and consistent throttle response. While it does not change performance on its own, accurate feedback helps the engine operate closer to its designed efficiency.

• Delivers continuous oxygen-level data to the ECU for precise fuel metering.
• Supports stable idling and reduced engine hesitation under load.
• Factory-tested for OE-equivalent reliability and long service life.

What makes this sensor easy to fit in my vehicle?

The Bosch 0258017025 includes a vehicle-specific connector so it plugs into the existing wiring harness without splicing. It arrives ready-to-fit, reducing installation time and error compared with generic sensors that require adapter cables.

• Vehicle-specific connector matches factory wiring for plug-and-play fitment.
• Pre-assembled wiring and connector lower installation steps and risk.
• Compact design fits OEM mounting locations without modification.

How durable and reliable is this Bosch oxygen sensor?

Bosch applies the same functional and quality tests used for original equipment parts, ensuring the sensor withstands typical exhaust temperatures and contamination encountered in daily driving. Continuous product development keeps the design current with evolving engine systems.

• Tested to OE standards for performance and long-term stability.
• Materials chosen to resist heat and exhaust contaminants.
• Manufactured under Bosch quality controls and updated through ongoing R&D.

How will I know this sensor fits my car?

Fitment depends on make, model and year; the product is sold with a vehicle-specific connector suited to particular vehicle applications. Check compatibility lists or enter your vehicle details to confirm this part number matches your car’s requirements.

• Part number Bosch 0258017025 corresponds to specific vehicle applications.
• Confirm fitment using VIN, year, make and model or OEM cross-reference.
• Supplier fitment tools or dealer data can verify correct connector type.

Who is this for: The Bosch 0258017025 lambda sensor is aimed at vehicle owners, independent mechanics and service shops replacing a faulty oxygen sensor with a direct-fit, OE-quality component. It suits drivers seeking an installation-ready, tested sensor with a vehicle-specific connector to minimize installation time and ensure proper electrical mating with factory wiring harnesses.