NGK direct-fit oxygen sensor for 2001–2002 Mercedes-Benz CLK55 AMG. Oxygen sensors provide continuous closed-loop feedback to the engine control unit to help maintain engine performance, maximize fuel efficiency and reduce emissions by regulating air–fuel ratio and alerting OBDII systems to fuel delivery or catalytic converter problems. This sensor uses an advanced ceramic element with a 3-stage contaminant-resistant plasma-jet and deposit-trap overcoat to protect against element poisoning.
NGK Mercedes-Benz CLK55 AMG 2002-2001 Direct Fit Oxygen Sensor