NGK OZA668-EE69-97744 Oxygen Sensor 97744

【NGK OZA668-EE69-97744 Oxygen Sensor 97744 O2】
■Product Description
NTK O2 Sensor that detects ideal air-fuel ratio
Advanced control is required to reduce harmful substances (HC, CO, NOx) in exhaust gases, and O2 sensors play an important role in detecting the oxygen concentration in exhaust gases and feeding it back to the ECU*1.
NTK O2 sensors detect the oxygen concentration in exhaust gases and feed it back to the ECU so that the fuel-air mixture ratio (air-fuel ratio) becomes the optimal stoichiometric air-fuel ratio "λ (lambda) = 1*2". If the ECU detects from the O2 sensor's signal that the fuel is too rich compared to the stoichiometric air-fuel ratio, it thins the fuel, and if it's too lean, it enriches the fuel, thereby controlling the engine close to the stoichiometric air-fuel ratio, which most effectively purifies harmful substances in exhaust gases. Thus, NTK O2 sensors are an important component in reducing harmful substances in exhaust gases.

Specifications
【Features and Structure】
Zirconia elements have the characteristic of generating electromotive force due to differences in oxygen concentration at temperatures exceeding 300°C. Utilizing this characteristic, zirconia-type sensors detect the difference in oxygen concentration between the inside and outside of the element (atmosphere and exhaust gas) and feed back to the ECU whether the fuel is rich or lean compared to the stoichiometric air-fuel ratio.
Wide-range air-fuel ratio sensors can detect how rich or lean the fuel is relative to the stoichiometric air-fuel ratio. Therefore, more precise engine control is possible than with zirconia O2 sensors. It also enables engine control outside of the stoichiometric air-fuel ratio (λ=1), such as lean burn control. Furthermore, there are early-activation wide-range air-fuel ratio sensors that maintain the characteristics of conventional wide-range air-fuel ratio sensors while improving heat resistance and durability, and achieve early activation (starts operating within 5 seconds after the engine key is turned ON) through an integrated structure of the element and heater.
【Need for Replacement】
O2 sensors are constantly exposed to exhaust gases exceeding 600°C and operate in a very harsh environment where combustion byproducts adhere to them.
Using a deteriorated or damaged O2 sensor can lead to various problems.
5 years or 80,000 km or more from new car*
*May vary depending on vehicle usage conditions.
Compatible manufacturer: Mitsubishi
Compatible genuine part number: MR578634

■Image Precautions
*Images are for illustration purposes only. Includes products with different sizes and colors. Product designs and specifications may change without notice. Please be aware of this.

■Notes
O2 sensors are designed for specific vehicle models and engines and are not interchangeable with other types.
(1) Always turn off the engine before inspection, replacement, or adjustment.
(2) Perform inspection and replacement according to the service manual of each automobile manufacturer.
(3) Use the O2 sensor with the correct part number as described in this document.
(4) It may not function properly if used in modified vehicles.
(5) Be careful as dropping or impacting the sensor may cause the internal ceramic element to break.
(6) Anti-seize compound is applied to the threaded part of the sensor. To prevent adhesion of dirt, etc.,
remove the protective cap just before installing the sensor.
(7) Do not wipe off the anti-seize compound.
(8) If anti-seize compound gets on your hands, etc., wash it off immediately with water.
(9) Do not twist or bend the lead wire fixed to the main body.
(10) Do not use an impact wrench when installing the sensor.
(11) To install the sensor, thread it in with your fingertips, then use a wrench to tighten it to the following approximate torque:
【Part numbers starting with "LZA", "OZA", "OZR", "UAR"】:
Sensor with screw diameter 18mm, pitch 1.5mm, Hex 22mm = approx. 45-55 N・m (4.5-5.5 kgf・m)
(12) Do not allow the lead wires or connectors to touch the exhaust manifold or other hot parts.
(13) Route the lead wires in the same way as the original and securely attach the connector.
(14) Depending on the condition of your vehicle, replacing the O2 sensor alone may not resolve the problem.
(15) When the MIL illuminates, before (or after) replacing the sensor, follow the service manual, etc., and
always clear (reset) the diagnostic (self-diagnosis/OBD) error codes.
Failure to clear the error codes may lead to problems such as the MIL not turning off.