Bosch Lambda sensors are devices that measure the oxygen content in a vehicle’s exhaust system. They are used to help control the air-fuel mixture in modern gasoline engines, allowing the engine management system to make real-time adjustments to maintain an optimal stoichiometric ratio of 14.7:1 (air to fuel). This helps to improve fuel efficiency, reduce emissions, and ensure reliable engine performance. Bosch Lambda sensors are known for their precise measurements, quick response times, and long service life, making them a popular choice for both original equipment installations and replacement applications. They are available in a variety of designs and configurations to suit different engine types and applications and are backed by Bosch’s reputation for quality and reliability.