Mercedes Benz A Class W168 A160 A190 M166 97-04 4 Wire 420mm Lambda Oxygen

Mercedes Benz A Class W168 A160 A190 M166 97-04 4 Wire 420mm Lambda Oxygen Sensor OE 15400517

High-quality replacement lambda oxygen sensor designed for the Mercedes-Benz A-Class W168 A160 and A190 models equipped with the reliable M166 petrol engine. Featuring a 4-wire configuration and 420mm lead length, this sensor is manufactured to OE specifications to accurately monitor oxygen levels in the exhaust system and communicate with the engine control unit (ECU) to maintain the optimal air-fuel mixture for efficient combustion, improved fuel economy, and reduced emissions.

A worn or faulty oxygen sensor can cause increased fuel consumption, rough idling, poor engine performance, hesitation during acceleration, excessive exhaust emissions, and illumination of the check engine light. Replacing a defective sensor helps restore engine efficiency, improve drivability, and maintain proper catalytic converter operation.

Features:

• High-quality OE-specification lambda oxygen sensor
• 4-wire configuration
• 420mm lead length
• Direct-fit replacement for easy installation
• Accurately monitors exhaust oxygen content
• Helps maintain the correct air-fuel ratio
• Improves fuel economy and engine performance
• Assists in reducing harmful exhaust emissions
• Durable construction for long service life

Vehicle Compatibility:

• Mercedes-Benz A-Class W168 A160
• Mercedes-Benz A-Class W168 A190
• Engine Code: M166
• Petrol Engine
• Model Years: 1997-2004
• Lambda / Oxygen Sensor Application

Note: Please compare the existing sensor, wire configuration, lead length, and OE reference number (15400517) with your vehicle before ordering to ensure correct fitment. Professional installation and diagnostic testing are recommended for optimum performance and reliability.

What's in the box
1 x Oxygen Sensor