NGK OZA726-EN2-94816 Oxygen Sensor 94816 Total Length 355mm

【NGK OZA726-EN2-94816 Oxygen Sensor 94816 Total length 355mm O2】
■Product Description
NTK O2 Sensor for Detecting Ideal Air-Fuel Ratio
Advanced control is required to reduce harmful substances (HC, CO, NOx) in exhaust gas. 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) is the optimal stoichiometric air-fuel ratio "λ (lambda) = 1*2". The ECU uses signals from the O2 sensor to control the engine near the stoichiometric air-fuel ratio, which most effectively purifies harmful substances in the exhaust gas. If the fuel is too rich compared to the stoichiometric air-fuel ratio, the ECU makes it leaner; if it's too lean, it makes it richer. Thus, the NTK O2 sensor is an important component in reducing harmful substances in exhaust gas.

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.
Full-range air-fuel ratio sensors can detect how rich or lean the mixture is relative to the stoichiometric air-fuel ratio. This allows for more precise engine control than with zirconia O2 sensors. It also enables engine control at air-fuel ratios other than the stoichiometric ratio (λ=1), such as lean burn control. Furthermore, there are early-activation full-range air-fuel ratio sensors that maintain the characteristics of conventional full-range air-fuel ratio sensors while improving heat resistance and durability, and achieve early activation (start operating within 5 seconds after the ignition key is turned ON) due to the integrated structure of the element and heater.
【Need for Replacement】
O2 sensors are constantly exposed to exhaust gas 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.
After 5 years or 80,000 km from new*
*Varies depending on vehicle usage conditions.
Total length: 355mm
Total length is the length from the gasket to the tip of the connector.
Compatible manufacturer: Nissan
Compatible genuine part number: 22690-AN215

■Image Disclaimer
*Images are for illustration purposes only. Products may include different sizes and colors. Product design and specifications are subject to change without notice. Please understand.

■Precautions
O2 sensors are designed for specific vehicle models and engines, so they 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 correct O2 sensor part number listed in this document.
(4) It may not function normally 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 compound is applied to the threaded part of the sensor. To prevent dirt from adhering,
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 or other body parts, wash it off immediately with water.
➈ Do not twist or bend the lead wire fixed to the main unit.
➉ 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 torque specification as a guide.
【Part numbers starting with "LZA", "OZA", "OZR", "UAR"】:
Sensor with screw 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 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 only the O2 sensor may not resolve the problem.
(15) When the MIL (Malfunction Indicator Lamp) 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.