NGK OZA645-EH1-96745 Oxygen Sensor 96745 Total Length 745mm

[NGK OZA645-EH1-96745 Oxygen Sensor 96745 Total length 745mm O2]
■Product Description
NTK O2 Sensor Detects Ideal Air-Fuel Ratio
Advanced control is necessary to reduce harmful substances (HC, CO, NOx) in exhaust gases, and the O2 sensor plays an important role in detecting the oxygen concentration in the exhaust gas and feeding it back to the ECU*1.
The NTK O2 sensor detects the oxygen concentration in the exhaust gas and feeds it back to the ECU so that the fuel-air mixture ratio (air-fuel ratio) becomes the ideal stoichiometric air-fuel ratio "λ (lambda) = 1*2". The ECU uses signals from the O2 sensor to control the air-fuel ratio near the stoichiometric air-fuel ratio, which most effectively purifies harmful substances in the exhaust gas, by making the fuel leaner if it is too rich (rich) and richer if it is too lean (lean) relative to the stoichiometric air-fuel ratio. In this way, the NTK O2 sensor is an important component in reducing harmful substances in exhaust gases.

Specifications
[Features/Structure]
Zirconia elements have the characteristic of generating electromotive force due to differences in oxygen concentration at temperatures exceeding 300°C. Using 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 relative to the stoichiometric air-fuel ratio.
Full-range air-fuel ratio sensors can detect how rich or lean the mixture 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. In addition, there are early-activation full-range air-fuel ratio sensors that have improved heat resistance and durability while maintaining the characteristics of conventional full-range air-fuel ratio sensors, and achieve early activation (starts operating within 5 seconds after the engine key is turned ON) due to the integrated structure of the element and heater.
[Necessity of Replacement]
O2 sensors are constantly exposed to exhaust gases exceeding 600°C and have combustion products adhering to them, operating in a very harsh environment.
Using a deteriorated or damaged O2 sensor can lead to various problems.
5 years or 80,000 km or more from a new car*
*Varies depending on the vehicle's usage conditions.
Total length: 745mm
The total length is the length from the gasket to the tip of the connector.
Compatible manufacturer: Honda
Compatible genuine part number: 36531-PWA-903

■Image Disclaimer
*Images are for illustration purposes only. Includes products with different sizes and colors. Product designs and specifications are subject to change without notice. Please be aware.

■Precautions
O2 sensors are designed for specific car 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 an O2 sensor with the correct part number as stated in this document.
(4) May not function properly if used in modified vehicles, etc.
(5) Be careful as dropping or impacting the sensor may cause the internal ceramic element to break.
(6) Anti-seize agent is applied to the threaded part of the sensor. To prevent adhesion of dirt, etc.,
remove the protective cap immediately before installing the sensor.
(7) Do not wipe off the anti-seize agent.
(8) If anti-seize agent gets on your hands or other parts of your body, wash it off immediately with water, etc.
(9) Do not twist or bend the lead wires fixed to the main unit.
(10) Do not use an impact wrench when installing the sensor.
(11) When installing the sensor, screw it in with your fingertips, then use a wrench to tighten it to the following approximate tightening torque.
[Part numbers starting with "LZA", "OZA", "OZR", "UAR"]:
Sensors with thread diameter 18mm, pitch 1.5mm, Hex 22mm = approximately 45-55 N・m (4.5-5.5 kgf・m)
(12) Do not allow the lead wires or connector 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 car, replacing only the O2 sensor may not resolve the problem.
(15) If the MIL (Malfunction Indicator Lamp) illuminates, clear (reset) the diagnostic (self-diagnosis/OBD) error code according to the service manual, etc., before (or after) replacing the sensor.
Failure to clear the error code may lead to problems such as the MIL not turning off.