NGK OZA751-EE7-94029 Oxygen Sensor 94029 Total length 425mm

【NGK OZA751-EE7-94029 Oxygen Sensor 94029 Total Length 425mm 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 air-fuel 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, where harmful substances in the exhaust gas are most effectively purified, by making the fuel leaner if it is too rich (rich) relative to the stoichiometric air-fuel ratio, and richer if it is too lean (lean). 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, the zirconia type sensor detects the difference in oxygen concentration between the inside and outside of the element (atmosphere and exhaust gas) and feeds back to the ECU whether the fuel is rich or lean relative to the stoichiometric air-fuel ratio.
Wide-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 at air-fuel ratios other than the stoichiometric air-fuel ratio (λ=1), such as lean burn control. In addition, there are early activation type 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) 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 by-products, 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.
Total length: 425mm
The total length is the length from the gasket to the tip of the connector.
Compatible manufacturer: Toyota
Compatible genuine part number: 89465-68010

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

■Precautions
O2 sensors are designed specifically for each vehicle model and engine, so they are not interchangeable with other types.
(1) Always stop the engine before inspection, replacement, or adjustment.
(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 correctly if used in modified vehicles.
(5) Be careful, as dropping it or subjecting it to impact may break the internal ceramic element.
(6) Anti-seize compound is applied to the threaded part of the sensor. To prevent dust and debris from adhering,
remove the protective cap immediately before installing the sensor.
(7) Do not wipe off the anti-seize compound.
(8) If anti-seize compound comes into contact with hands or other skin, 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, then use a wrench to tighten it to the following approximate torque.
【Part numbers starting with "LZA", "OZA", "OZR", "UAR"】:
Sensors with thread 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 come into contact with 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.