Audi S6 C7 S7 4G Lambda Probe Oxygen Sensor 5 Pin Cyl. 5-8 4.0 Petrol 0258027199

Audi S6 C7 S7 4G 4.0 Petrol Lambda Sensor 5 Pins Cyl. 5-8 is an original part from the Lambda Sensors and O2 Sensors category, designed for use in V8 petrol engines within the 5-8 cylinder range. This used, tested sensor allows for a technically correct replacement of the factory sensor, maintaining proper mixture control and stable engine operation. It's a solution for users who expect compatibility with the factory engine control system and predictable exhaust system behavior.

Specifications and technical data

• SKU: 4H0906262H
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0906262H
• Substitutable numbers: 0258027199, 025 802 719 9, 4H0906262H, 4H0 906 262 H
• Fuel type: Petrol
• Category: Oxygen Sensors

Lambda Sensor Purpose and Function

The presented lambda sensor is designed to work with the 4.0 petrol engine in Audi S6 C7 and S7 4G models, specifically for cylinders 5-8. Its task is to measure oxygen content in the exhaust gases and transmit a signal to the engine control unit, enabling precise fuel injection correction. This allows the injection system to maintain the mixture within the optimal range, supporting proper engine running, adequate dynamics, and exhaust emission control.

The configuration with a 5-pin connector is characteristic of advanced control systems where quick sensor response and signal stability are crucial. Proper matching of the sensor to the specific cylinder range is important for the even operation of both banks of the V8 engine and for correct adaptation in the control unit.

Benefits of Using an Original Lambda Sensor

Using an original lambda sensor in an Audi with a 4.0 petrol engine offers a number of practical technical benefits:

• maintaining the factory engine operating characteristics for cylinders 5-8,
• proper cooperation with the fuel-air mixture control system,
• stable signal for the control unit, reducing the risk of diagnostic errors related to the exhaust system,
• support for maintaining appropriate fuel consumption and throttle response,
• compliance with the factory electrical system architecture thanks to the correct connector type.

Choosing a used, original part from this group allows for a technically correct repair without the need for replacements with uncertain parameters, which is particularly important in high-performance petrol engines.

Installation and Operational Characteristics

The lambda sensor offered here is intended for installation in the exhaust system of Audi S6 C7 / S7 4G with a 4.0 petrol engine, in the section corresponding to cylinders 5-8. The design with a dedicated electrical connector allows for connection to the factory wiring harness without modifying the installation, which reduces the risk of contact problems and signal interference.

When replacing, it is recommended to:

• check the condition of the thread in the manifold or exhaust pipe socket,
• use the appropriate lambda sensor wrench to avoid damaging the sensor body,
• inspect the electrical harness for abrasions and contact corrosion.

This approach allows for full utilization of the sensor's potential and reduces the risk of premature re-installation.

Why Choose a Used Audi Lambda Sensor

For advanced control systems in V8 petrol engines, using a used, original sensor is often a favorable compromise between cost and quality. A part originating from the same model family maintains compatibility with the control unit's software and factory parameters, facilitating diagnostics and subsequent operation. For many users, this is a way to maintain the car's high performance at a reasonable service cost.

If you want to better understand how to safely select and install used sensors and other engine electronics components, the Global Parts guide will be useful: Used Car Electronics – Second-Hand ECUs and Sensors. You will find practical tips on compatibility, markings, and installation procedures there.

Expanding the Exhaust Measurement System in Audi

If you are planning a comprehensive repair or upgrade of the exhaust and emission control system in your Audi and need other parts from the same group, such as additional lambda sensors, O2 sensors, or related measurement components, check the available parts in the Audi Lambda Sensors and O2 Sensors category.