Replacement Auto Oxygen Sensor OEM 89467-33160 For Toyota Lexus

Replacement Auto Oxygen Sensor OEM 89467-33160 For Toyota Lexus

Specifications:

Car Applicable Models:

Core Structure and Operating Principle (Basics of Understanding the Process)

First, we need to understand the core task of an oxygen sensor: detecting the oxygen concentration in the exhaust gas and generating a corresponding electrical signal.

Core Component: A zirconium dioxide (ZrO₂) ceramic tube/plate, which allows oxygen ions to pass through at high temperatures, forming an "oxygen concentration cell."

Key Structure:

Zirconium dioxide ceramic body: Typically in the form of a test tube or flat plate.

Platinum Electrode: A porous platinum layer sintered onto the inner and outer surfaces of the ceramic body, providing both electrical conductivity and gas permeability.

Heater: A built-in ceramic heating rod that quickly (typically within 30 seconds) raises the sensor to operating temperature (approximately 600-800°C).

Metal Housing: A housing with ventilation holes for mechanical attachment and physical protection.

Multi-layered Protective Layer: Includes a porous ceramic protective layer (for corrosion and erosion protection) and a dense isolation layer (to prevent electrode poisoning).

Oxygen Sensor install position:

The oxygen sensor is located in the exhaust manifold downpipes before the catalytic converter or between the exhaust manifolds and the catalytic converters.

What does an Oxygen Sensor do in the car ?

When a gasoline-powered engine burns gasoline there is oxygen present. Oxygen in an engine is the result of a number of factors including the air temperature, altitude, engine temperature, load on the engine, and barometric pressure. The ideal ratio for oxygen and gasoline is 14.7:1, which slightly varies depending on different types of gas. In the instance that there is less oxygen present fuel will remain after combustion, which is referred to as a rich mixture. On the other hand, if there is more oxygen present it is referred to as a lean mixture. Both the rich and lean mixtures are bad for your car, as well as for the environment. A rich mixture results in fuel that is not burned that creates pollution. A lean mixture generates nitrogen-oxide pollutants, which can lead to decreased vehicle performance and engine damage. Oxygen sensors are positioned near points in the exhaust system so to determine if there are rich or lean mixtures in your car. Typically, an O2 sensor creates a voltage due to a chemical reaction resulting from an off-balanced gasoline to oxygen ratio. Most car engines can determine how much fuel to expend into the engine based on the voltage of the O2 sensor. If your oxygen sensor fails to function properly, your engine management computer cannot determine the air to fuel ratio. Therefore, the engine is forced to guess how much gasoline to use, resulting in a polluted engine and a poorly functioning vehicle.

What to do if can't find your oxygen sensor in our website ?

If you can't find your oxygen sensor type in our website, you could send your sample to us , we can produce according to the sample. Minimum quantity is 50 pcs, and with reasonable price.

MHC AP Oxygen Sensor Advantages:

1. Our oxygen sensor is from Japan, Same as original quality.   

2. Competitive Price 

3. Small order acceptable

4. Sample acceptable 

About Us:

Our company specialized in auto spare parts over 15 years, supply all kinds of auto parts with rich experience , proven technique. Especially for chassis parts: engine mount, control arm, brake pads, brake disc, brake caliper, bearing , hub bearing, steering rack , tir rod end, rack end, ball joint, and electrical parts: sensor, clock spring, window switch, spark plug, ignition coil, injector, fuel pump, and lot of HONDA spare parts for Accord, Civic, Crv , Fit, City, Odyssey. We really hope we can make a forever business cooperation relationship and friendship.