The Lambda sensor fits directly into the exhaust systems. It precisely measures the amount of Oxygen present in the exhaust gases and reports its findings to the ECU (Electronic control unit). The ECU Uses this information to adjust the fuel injection system to obtain the maximum fuel efficiency while keeping the exhaust emissions at a safe level. Since early 1980’s NGK have pioneered the research in Lambda Sensor technology. Constantly refining and improving design and materials used to improve the lifespan and accuracy of the Sensor. Sensors operate in an extremely hostile environment inside the exhaust system. NGK Sensors are designed to withstand the extremely high heat and gas pressure. Please note All sensors come in a factory sealed, clear plastic bag. Please check fittings, plug & length (where applicable), before opening the bag. This does not affect your statutory rights. In the compatibility section if available and double check the. For more information on the part needed for your particular vehicle. Picture is an accurate example, Actual item may vary slightly. If a picture isn’t provided to us then a stock image representing the product and brand may be used. Data provided to us is accurate to our knowledge but could vary. MG : ERR 1834 ROVER : ERR1834. We are dedicated to ensuring the highest possible quality service to our customers. Don’t forget to regularly visit our store as we are constantly adding new products, special offers and unbeatable deals to our listings! Made with love by.