Feature

●?【Interchange Number】234-4407 *4
●?【Applications】Replacement for Chevy GMC V8 4.8L 2006 2005 2004 2003 O2 Sensor 234-4407 x4 02 Sensor
●?【Fuction】High-quality material for long-lasting durability. Perfect match for the original car and easy to install
●?【Cautions】Pls carefully check your vehicle year & make & model with the fitment of Amazon and our description. You must read our description carefully, and it will tell you more about the fitment. Pls check your part pictures with our pictures, it must be completely same. Or it will not fit your car. Pls check your parts No. It must be among our fitment OEM No.
●?【Warranty】: 1-Year Unlimited Miles Warranty. If the oxygen sensor doesn not fit your vehicle, we accept return. Please make the item clean and package in good condition.

Description

Maxfavor dedicated to provide the good selection, the latest cutting edge technology, and the good overall shopping experience. It is constructed from quality stainless steel, porous polytetrafluoroethylene, fluorine rubber, aluminum oxide, high-grade platinum and ceramics. Maxfavor oxygen sensor features double protection layer, aluminum oxide trap layer, porous PTFE filter and stainless steel housing. It is manufactured with precision to meet OE standards and can be installed easily and ensures longevity.


Detect the resistance of the oxygen sensor When the engine temperature reaches normal, unplug the wire connector of the oxygen sensor and use a resistance meter to detect the resistance between the oxygen sensor terminals. The resistance value should meet the requirements of the specific model standard value (generally 440Ω)	Detecting oxygen sensor voltage Use the fault diagnosis instrument to detect the engine, extract the fault code, and observe the data stream. The operation of the oxygen sensor is judged by the magnitude and frequency of the voltage change of the oxygen sensor. If it is working properly, the voltage should be between 0.4 and 0.6V. If the voltage is always at 0.45V, the oxygen sensor will not work.	Observe the appearance color of the oxygen sensor probe Oil pollution: the surface of the probe is covered with a white or gray-black oily deposit on one side. Silicon poisoning: probe deposit color between bright white and granular light gray Lead poisoning: shiny rust layer on the probe surface Antifreeze contamination: a layer of dirt on the surface of the probe