【FITMENT】 - 100% brand new, brand guarantee, carries all after-sales problems. Oxygen Sensor Fit For Chevrolet GMC Pontiac OE numbers are 0258017025,99154080001,D4300-38231L0A
【QUALITY】 - The Oxygen Sensor adopts precise design,High-quality material for long-lasting durability
【FUNCTION】 - The working principle of oxygen sensor is: the use of ceramic sensitive elements to measure the oxygen potential in the exhaust pipe of the car, the chemical equilibrium principle to calculate the corresponding oxygen concentration, to achieve the purpose of monitoring and controlling the combustion air-fuel ratio, in order to ensure product quality and exhaust emission standards of the measuring element.
【INSTALLATION TIPS】 - To ensure the safety and normal use of our product, please have this oxygen Sensor installed by a professional car mechanic. To avoid damage to the mechanic or accidents, please do not disassemble the products
【NOTICE】 - Please check the description and compatibility chart before purchasing. We offer one year warranty for all our oxygen sensor. If you are not sure this part is suitable, please feel free to contact us, we'll reply you as soon as possible.