Part number : 3921023500 ( 39210-23500 )
Part name : SENSOR ASSY-OXYGEN
Application model : Hyundai Avante XD
Net weight (in plastic bag) : 0.094kg
Gross weight (in box) : 0.134kg
Produced by Hyundai Kefico, made in Korea.
One different thing I noticed is a package. Most of part are packed in transparent plastic bag but this oxygen sensor is packed in thick silver colored bag. I’m not sure but it may be special bag for sun protection.
And I found remark on the part “license Bosch”
After I checked in Wikipedia, understood why there is the remark.
An oxygen sensor (or lambda sensor, where lambda refers to air–fuel equivalence ratio, usually denoted by λ) is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analysed.From Wikipedia : https://en.wikipedia.org/wiki/Oxygen_sensor
It was developed by Robert Bosch GmbH during the late 1960s under the supervision of Dr. Günter Bauman.
The original technology of oxygen sensor is developed by Bosch.