NGK OZA682-EDH4-93702 Oxygen Sensor 93702 Overall Length 210mm

【NGK OZA682-EDH4-93702 Oxygen Sensor 93702 Total Length 210mm 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. O2 sensors play a crucial role in detecting the oxygen concentration in exhaust gases and feeding this information 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 air-fuel mixture ratio (air-fuel ratio) becomes the optimal stoichiometric air-fuel ratio "λ (lambda) = 1*2". If the ECU receives a signal from the O2 sensor indicating that the fuel is rich relative to the stoichiometric air-fuel ratio, it thins the fuel; if it's lean, it enriches the fuel. This control ensures operation near the stoichiometric air-fuel ratio, which most effectively purifies harmful substances in the exhaust gas. Thus, NTK O2 sensors are important components for 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 oxygen concentration difference 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.
Wideband 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 compared to zirconia O2 sensors. It also allows for engine control at air-fuel ratios other than the stoichiometric air-fuel ratio (λ=1), such as lean burn control. Furthermore, there are early activation wideband air-fuel ratio sensors that maintain the characteristics of conventional wideband air-fuel ratio sensors while improving heat resistance and durability, and achieve early activation (start operation within 5 seconds after the ignition key is turned ON) through an integrated element and heater structure.
【Need for Replacement】
O2 sensors are constantly exposed to exhaust gases exceeding 600°C and accumulate combustion byproducts, operating in a very harsh environment.
Using a deteriorated or damaged O2 sensor can lead to various problems.
More than 5 years or 80,000 km since new*
*Varies depending on vehicle usage conditions.
Overall length: 210mm
The total length is the length from the gasket to the tip of the connector.
Compatible manufacturer: Daihatsu
Compatible genuine part number: 89465-B5042

■ Image Notes
*Images are for illustration purposes only. Includes products with different sizes and colors. Product design and specifications are subject to change without notice. Please understand.

■ Precautions
O2 sensors are specifically designed for each vehicle model and engine type and are not interchangeable with other types.
(1) Always stop the engine before inspecting, replacing, or adjusting.
(2) Perform inspection and replacement according to the service manual of each automobile manufacturer.
(3) Use the O2 sensor with the correct part number listed in this document.
(4) May not function properly if used on modified vehicles, etc.
(5) Be careful not to drop or shock the sensor, as the internal ceramic element may 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) When installing the sensor, screw it in by hand and then tighten it with a wrench to the following tightening torque as a guide.
【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 wire or connector to touch the exhaust manifold or other hot parts.
(13) Route the lead wire 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 code.
Failure to clear the error code may lead to problems such as the MIL not turning off.