BMW G11 G30 G31 LCI G20 G21 Diesel Exhaust Gas Temperature Sensor 8490145

BMW G11 G30 G31 LCI G20 G21 Exhaust Gas Temperature Sensor is an original part from the Lambda Sensors and O2 Sensors group, designed for modern BMW diesel units. Precise measurement of exhaust gas temperature in a diesel engine allows for stable operation of the exhaust system and correct functioning of exhaust gas purification systems. This component is a suitable choice for professional repair or diagnostics of the exhaust system in BMW G series vehicles.

Specifications and technical data

• SKU: 8490145
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8490145
• Substitutable numbers: 13628490145, 8490145
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and Function of the BMW Exhaust Gas Temperature Sensor

The exhaust gas temperature sensor in BMW G series models is responsible for the current measurement of gas temperature in the diesel engine's exhaust system. Data from this component is used by the engine control unit for:

• controlling the combustion process and protecting components from overheating,
• proper control of the DPF (Diesel Particulate Filter) operation,
• monitoring the efficiency of the exhaust gas purification system,
• diagnosing malfunctions in the engine unit.

Therefore, replacing a faulty sensor with a functional one allows for the restoration of stable engine operating parameters and reduces the risk of costly failures within the exhaust system.

Compatibility with BMW G Series Models

The presented sensor is designed for modern BMW G family constructions, particularly popular executive and mid-range sedans and wagons. Its application in vehicles with a Diesel engine makes it an essential component for the correct operation of advanced exhaust emission control systems.

Original origin from the BMW brand means maintaining factory measurement parameters, proper thread and connector fit, and electrical compatibility with the vehicle's wiring. This is especially important for cars equipped with extensive control electronics and a complex sensor network.

Performance Characteristics and Benefits of Use

Choosing an original exhaust gas temperature sensor for BMW offers a range of practical benefits:

• stable temperature readings across a wide operating range of the diesel engine,
• compatibility with the engine control unit's factory software,
• maintenance of correct DPF regeneration strategies,
• reduced risk of exhaust system-related errors in the control unit's memory.

This component is particularly important in vehicles used for short distances or in urban conditions, where the exhaust gas purification system operates under more demanding conditions. Using a functional sensor helps maintain the correct emission levels and improves the engine unit's running smoothness.

Condition, Origin, and Service Application

The offered exhaust gas temperature sensor is a used part, sourced from a dismantled BMW vehicle. This type of component is often chosen by workshops specializing in the BMW brand and by informed users seeking a reasonable compromise between repair cost and maintaining original manufacturer specifications.

In practice, installing the sensor in place of a worn or damaged component allows for:

• restoring correct temperature readings in the exhaust system,
• reducing the risk of the engine entering limp mode,
• achieving stable operating parameters for emission-related systems.

Selection by Numbers and Technical Support

When selecting an exhaust gas temperature sensor for a specific BMW model, it is crucial to match it by OEM number and interchangeable part numbers, as well as verify compatibility with the engine type and vehicle year. Proper matching eliminates problems with mechanical installation and communication with the car's electronics.

If you want to deepen your knowledge on selecting and installing used electronic components and sensors in cars, it is worth reading the Global Parts guide: Used Automotive Electronics – How to Safely Choose Second-Hand ECU Modules and Sensors. There you will find practical tips on compatibility, markings, and installation procedures.

If you are planning a comprehensive repair or upgrade of the exhaust system area in your BMW and need other parts from the same group, such as additional exhaust gas temperature sensors, measurement probes, or O2 control elements, check the available parts in the BMW Lambda Sensors and O2 Sensors category.

For users who want to better understand the advantages of using original second-hand components, there is also a material explaining the significance of OEM markings and their impact on operational safety: Why Used Original OEM Parts Are a Safe and Cost-Effective Choice. This will help you make an informed decision when planning exhaust system repairs for BMW diesel vehicles.