Denso 234-5082 Oxygen Sensor - High Performance Air Fuel Ratio Sensor for Toyota, Honda, Nissan - Perfect for Engine Tuning & Fuel Efficiency Improvement

The BOSCH, Hyundai, and KIA trademarks are laser etched on this authentic OEM Hyundai Denso 234-5082 Air Fuel Sensor OE QUALITY REPLACEMENT SENSOR; OE STYLE; CALIF sensor. This sensor was a perfect fit for the 2012 Hyundai Elantra Upstream.To ensure that the Denso O2 sensors can be easily removed during subsequent service, use the copper anti-senze grease that included with the sensors. If your engine is over 60,000-100,000 miles old and displaying rough idling, loss of power, poor acceleration, engine misfires, or even stalling, inspect the oxygen sensor and fuel trim. Oxygen sensors that fail have an impact on all types of critical engine activities, including air-fuel ratio, combustion intervals, and engine timing.The voltage range of a healthy O2 sensor is 200 to 800 millivolts, or 2. to 8. volts on your meter. If the reading is fixed in one spot or alternates erratically between high and low, your sensor has failed. The oxygen sensor measures the difference in oxygen levels between the air and the exhaust. It sends data to the engine computer, which alters the air intake and fuel. Like other auto parts, the O2 sensor has a limited lifespan. Depending on the type of sensor, it is usually between 30,000 and 100,000 miles. You will fail the California Smoke Inspection required to renew your license if your O2 sensors are faulty.