What is the life expectancy of an oxygen sensor?

Heated oxygen sensors should be checked or replaced every 60,000 miles, while unheated oxygen sensors should be checked or replaced every 30,000 miles

Do I need to replace all of the sensors at once?

It is best to replace O2 sensors in pairs. Because, replacing one sensor will cause the ECU to set a code for the other sensors. This is because the new sensor switching activity is much faster than that of the older aged sensors

The oxygen sensor will not come out.

If you are using an open end wrench, try an O2 socket. If this fails, try a long ratchet or breaker bar in conjunction with your socket to generate more torque. After the sensor is removed, be sure to use a thread cleaner to clean up the bung threads

Why does the fault code still exist after replacing the oxygen sensor?

1 Oxygen sensor circuit failure

Will this oxygen sensor work with my vehicle?

Marsflex oxygen sensor is consistent with OEM, please refer to the page information for compatibility information. You can check 'Amazon confirmed it' for confirmation, or provide us with your vehicle information and we will confirm it for you.

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Description

🚗 Feel the power of precision—upgrade your ride with Marsflex O2 Sensor!

DURABLE HIGH HEAT DESIGN - Withstands extreme temperatures up to 930°C for long-lasting reliability
PLUG PLAY COMPATIBILITY - Exact OE spec fit for Chevy, GMC, Cadillac & more—no guesswork installation
CONFIDENCE BACKED WARRANTY - 1-year warranty ensures quality and peace of mind on every drive
CATALYTIC CONVERTER GUARDIAN - Extends catalytic converter life by maintaining optimal air-fuel mix
PRECISION ENGINE OPTIMIZATION - Enhances engine performance & fuel economy with accurate oxygen sensing

The Marsflex Oxygen O2 Sensor 234-4668 is a high-quality upstream heated sensor designed for Chevy, GMC, Cadillac, and related models (2003-2013). Engineered to OE specifications, it offers precise oxygen measurement with a fast 22-second response time, durable construction rated up to 930°C, and easy installation. This sensor improves engine efficiency, fuel economy, and extends catalytic converter life, backed by a 1-year warranty for reliable performance.

Specifications

Brand	Marsflex
Item dimensions L x W x H	5.91 x 2.17 x 2.17 inches
Material	234-4668
Item Weight	0.12 Kilograms
Style	Upstream
Current Rating	0.95 Amps
Lower Temperature Rating	150 Degrees Celsius
Maximum Supply Voltage	12 Volts
Measurement Accuracy	Go & No-go Gauge
Measuring Range	λ=0.7- ∞
Mounting Type	Flange Mount
Output Type	Analog
Response Time	22 seconds
Sensing Distance	1000 Millimeters
Specific Uses For Product	Oxygen O2 Sensor
Upper Temperature Rating	930 Degrees Celsius
Manufacturer	Marsmotor
Item Weight	4.2 ounces
Product Dimensions	5.91 x 2.17 x 2.17 inches
Item model number	234-4668
Manufacturer Part Number	APEL14001
Wattage	12 watts

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