OEM GM Oxygen Sensors

12609457 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed...
$65.51
MSRP $104.82
Save $39.31
37.5% Off
12637297 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed...
$54.31
MSRP $83.57
Save $29.26
35% Off
12643707 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

Canyon, Colorado. 2.5l. Upper. Upstream. Malibu. 2.0l, 2.5l. 2.0L turbo. Regal. 2.0l. 2.4L. This part requires programming and/or...
$44.68
MSRP $68.74
Save $24.06
35% Off
12687606 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

Silverado, sierra. 5.3l. Upper. Right. 4.3, 5.3, 6.2L, 5.3, 6.2L. Silverado, sierra. 6.2l. This part requires programming and/or special...
$55.56
MSRP $85.48
Save $29.92
35% Off
55565000 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

Astra. Rear (position 2). This part requires programming and/or special setup procedures GM Service Information describes the procedures...
$67.78
MSRP $108.44
Save $40.66
37.5% Off
12656071 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed...
$122.15
MSRP $195.44
Save $73.29
37.5% Off
12695629 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

1.3L turbo. This part requires programming and/or special setup procedures GM Service Information describes the procedures and special...
$59.90
MSRP $80.85
Save $20.95
25.9% Off
12608663 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

G6. Right. Rear. Aura. 3.6l. This part requires programming and/or special setup procedures GM Service Information describes the...
$91.56
MSRP $146.50
Save $54.94
37.5% Off
12644786 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

Cruze, Cruze Limited. 2.0l. Upstream. With diesel, egr valve & related components. This part requires programming and/or special setup...
$138.83
MSRP $231.38
Save $92.55
40% Off
12597990 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

DTS. Lucerne. Front. 4.6l. This part requires programming and/or special setup procedures GM Service Information describes the...
$68.69
MSRP $109.90
Save $41.21
37.5% Off
92457789 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

Rear. SS. 6.0L. This part requires programming and/or special setup procedures GM Service Information describes the procedures and...
$61.04
MSRP $93.90
Save $32.86
35% Off
12559850 - : Heated Oxygen Sensor for GM Image

Heated Oxygen Sensor

Detects oxygen content in the exhaust gases to help optimize emissions This GM Genuine Part is designed, engineered, and tested to...
$78.01
MSRP $124.82
Save $46.81
37.5% Off

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How Oxygen Sensors Work in Your Chevrolet Blazer

Oxygen sensors are critical to properly operating your Chevrolet Blazer. These little but crucial components monitor the oxygen in your vehicle's exhaust gasses, ensuring that your engine operates effectively and emits fewer pollutants. Without functional oxygen sensors, your vehicle may experience lower fuel economy, higher emissions, and even engine damage. Regular maintenance or replacement of malfunctioning sensors may save you money at the gas pump while also extending the life of your engine. Furthermore, oxygen sensors help your car comply with environmental requirements, making them necessary for performance and sustainability.

Importance of Oxygen Sensors

Oxygen sensors are critical to keeping your Chevrolet Blazer's engine running properly. They are located in the exhaust system and measure the oxygen levels in the exhaust gases before and after combustion. These readings are communicated to your car's computer, which uses them to modify the air-to-fuel ratio for more efficient combustion. Properly working sensors guarantee that your vehicle works smoothly, boosting fuel efficiency and lowering hazardous emissions. Furthermore, oxygen sensors detect and notify any faults in the exhaust system, allowing you to address possible issues before they become more serious. Regular maintenance or timely replacement may improve engine performance and fuel economy while lowering environmental impact.

How Do Oxygen Sensors Work

Oxygen sensors are positioned in your Blazer's exhaust manifold and catalytic converter and continually check exhaust gasses' oxygen level. These sensors create a voltage signal proportional to the engine's air-to-fuel ratio. When the mixture becomes too rich (excess fuel) or too lean (excess oxygen), the sensors alert the vehicle's engine control unit (ECU), which adjusts the fuel injection appropriately. This continual feedback loop keeps the engine running efficiently while reducing fuel consumption and pollution. The smooth operation of oxygen sensors is critical to improving engine efficiency and lowering pollution emissions.

Signs of Faulty Oxygen Sensors

Faulty oxygen sensors can cause various problems with your Chevrolet Blazer. The illuminated "Check Engine" light is one of the first failure symptoms. Furthermore, you may notice a considerable drop in fuel efficiency, harsh engine idle, and even difficulties starting the vehicle. As the sensors degrade, they may produce false readings, forcing the ECU to inject the incorrect quantity of gasoline, resulting in poor engine performance. In rare situations, defective sensors might cause the vehicle to fail emissions tests since they control the discharge of dangerous gases. Timely sensor replacement might help to prevent these problems and maintain your car in good condition.

Advantages of Replacing Oxygen Sensors

Replacing worn-out oxygen sensors benefits your Chevrolet Blazer. New sensors increase fuel economy by ensuring the engine obtains the proper air-to-fuel ratio, reducing fuel use. It also helps to reduce the vehicle's emissions, which is good for the environment and can assist in passing emissions testing. Improved engine performance is another benefit since defective sensors can cause poor acceleration, stalling, and harsh idling. Finally, replacing sensors on time increases the overall life of your vehicle's engine, avoiding costly repairs caused by increased fuel use or exhaust system damage.

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