Wunderlich - Oxygen Sensor Guard for BMW R 1300 GSLambda sensors provide important parameters for engine management. They cannot be repaired, only replaced. Therefore, it is advisable to protect the sensors and their functionality as a precaution Function and Product Features Effective protection of the oxygen sensors from branches, stones and other foreign bodies Reduces soiling of the sensitive sensors Durable, stiff component geometry for robust protection Openings to counter heat build up Multi