How to replace the Heated Oxygen Sensor (HO2S) 1 on Chevrolet Monte Carlo?

Starting the heated Oxygen Sensor 1 (HO2S) 1 replacement process requires disconnecting the electrical connector that controls ho2s 1. Around 48°c (120°F) engine temperature creates a challenge for ho2s 1 removal while using excessive force may lead to Exhaust Manifold thread damage. Uses heated Oxygen Sensor wrench j 39194-b for separating the ho2s 1 from its location. The threads on the ho2s 1 require application of gm p/n 12377953 anti-seize compound or equivalent special graphite-glass bead anti-seize substance because it is recommended for these threads. Anti-seize compound arrives with new or service sensors ready for application. A reinstalled sensor requires anti-seize compound application to both the sensor threads before the installation process begins. After installation of the ho2s 1 use the heated Oxygen Sensor wrench (J 39194-B) to torque the sensor to 41 n.m (30 lb ft). Finally, reconnect the ho2s 1 electrical connector.

How to remove and install the Heated Oxygen Sensor (HO2S) on Chevrolet Monte Carlo?

A permanently attached pigtail and connector on the Heated Oxygen Sensor (HO2S) and Oxygen Sensor protects proper sensor function when kept undisturbed. Users must handle these sensors carefully with close attention to the in-line electrical connector and louvered end that requires protection from grease and dirt and cleanup agent avoidance. The first step to remove a heated oxygen sensor is turning OFF the ignition system followed by lifting the vehicle when changing HO2S 2 or you can remove the fuel injector sight shield when changing HO2S 1. The sensor electrical connector should be disconnected before carefully removing the heated oxygen sensor. When installing the heated oxygen sensor first apply anti-seize compound P/N 5613695 to its threaded section unless needed then securely tighten the sensor to 41 N.m (30 lb ft). Reinstall the HO2S sensor electrical connector and proceed with lowering the vehicle when working on HO2S 2 or with replacing the fuel injector sight shield when working on HO2S 1.

OEM Chevrolet Monte Carlo Oxygen Sensor

Oxygen O2 Sensor

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10 Oxygen Sensors found

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Chevrolet Monte Carlo Oxygen Sensor Part Number: 19209814
$59.22 MSRP: $120.28
You Save: $61.06 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly, Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 12574218
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Chevrolet Monte Carlo | LT, SS | 6 Cyl 3.8 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 19209807
$87.79 MSRP: $178.30
You Save: $90.51 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor
- Replaces: 12570149, 12574924, 12572772
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Chevrolet Monte Carlo | LS, LT, LTZ, SS | 6 Cyl 3.4 L GAS, 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS, 8 Cyl 5.3 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 19178958
$61.65 MSRP: $125.22
You Save: $63.57 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor; Manifold
- Replaces: 25178022, 25312203, 25312211, 25164488
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-2003 Chevrolet Monte Carlo | LS, SS, SS 35th Anniversary Edition, SS Dale Earnhardt Signature Edition, SS High Sport, SS Pace Car, Z34 | 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS, 6 Cyl 3.8 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 19178930
$66.41 MSRP: $134.88
You Save: $68.47 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Replaces: 25312184, 25165313, 25171579
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995-1996 Chevrolet Monte Carlo | LS, Z34 | 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 19178924
$68.05 MSRP: $138.20
You Save: $70.15 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 25161130, 25312207, 12587214, 19178921, 25164983, 25312196
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 Chevrolet Monte Carlo | LS, SS, Z34 | 6 Cyl 3.1 L GAS, 6 Cyl 3.4 L GAS, 6 Cyl 3.8 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 19178747
$83.90 MSRP: $151.86
You Save: $67.96 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaced by: 19355307
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Monte Carlo | LS, LS Competition, LS Sport, LT, SS, SS 35th Anniversary Edition, SS Dale Earnhardt Signature Edition, SS High Sport, SS Pace Car | 6 Cyl 3.4 L GAS, 6 Cyl 3.8 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 12580466
$62.06 MSRP: $126.05
You Save: $63.99 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Monte Carlo | SS | 8 Cyl 5.3 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 12559850
$59.96 MSRP: $121.78
You Save: $61.82 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2005 Chevrolet Monte Carlo | LS, LS Competition, LS Sport | 6 Cyl 3.4 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 25176705
$17.28 MSRP: $212.15
You Save: $194.87 (92%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1987 Chevrolet Monte Carlo | Base, LS | 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L GAS
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Chevrolet Monte Carlo Oxygen Sensor Part Number: 12584925
$81.31 MSRP: $165.13
You Save: $83.82 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Monte Carlo | LS, LT, LTZ | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L GAS

Chevrolet Monte Carlo Oxygen Sensor

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The Oxygen Sensor is a vital element of Chevrolet Monte Carlo automobiles that helps to track the air/fuel blend in the engine exhaust for higher efficiency and lower pollutions. The amount of mixture delivered to the engine is detected via the unburned oxygen sensor and compared with the amount of oxygen present in the earth's atmosphere; the sensor produces a voltage signal to help the engine control computer to balance the mixture. A zirconium dioxide sensing element is plated with platinum and the sensor is subjected to high temperatures and real life fluctuations of rich to lean cycling to keep the catalytic converter effective. Some of the newer models may use air/fuel ratio sensors for this type of measurement. Contaminants and age cause the decay of the sensors; thus, there are high emissions and low fuel economy. Preventive measures are crucial since they help to rectify anomalies as they reflect on the performance of the vehicle.

Chevrolet Monte Carlo Oxygen Sensor Parts and Q&A

Oxygen Sensor
19209807
Q: How to replace the Heated Oxygen Sensor (HO2S) 1 on Chevrolet Monte Carlo?
A:
Starting the heated Oxygen Sensor 1 (HO2S) 1 replacement process requires disconnecting the electrical connector that controls ho2s 1. Around 48°c (120°F) engine temperature creates a challenge for ho2s 1 removal while using excessive force may lead to Exhaust Manifold thread damage. Uses heated Oxygen Sensor wrench j 39194-b for separating the ho2s 1 from its location. The threads on the ho2s 1 require application of gm p/n 12377953 anti-seize compound or equivalent special graphite-glass bead anti-seize substance because it is recommended for these threads. Anti-seize compound arrives with new or service sensors ready for application. A reinstalled sensor requires anti-seize compound application to both the sensor threads before the installation process begins. After installation of the ho2s 1 use the heated Oxygen Sensor wrench (J 39194-B) to torque the sensor to 41 n.m (30 lb ft). Finally, reconnect the ho2s 1 electrical connector.
Oxygen Sensor
19178924
Q: How to remove and install the Heated Oxygen Sensor (HO2S) on Chevrolet Monte Carlo?
A:
A permanently attached pigtail and connector on the Heated Oxygen Sensor (HO2S) and Oxygen Sensor protects proper sensor function when kept undisturbed. Users must handle these sensors carefully with close attention to the in-line electrical connector and louvered end that requires protection from grease and dirt and cleanup agent avoidance. The first step to remove a heated oxygen sensor is turning OFF the ignition system followed by lifting the vehicle when changing HO2S 2 or you can remove the fuel injector sight shield when changing HO2S 1. The sensor electrical connector should be disconnected before carefully removing the heated oxygen sensor. When installing the heated oxygen sensor first apply anti-seize compound P/N 5613695 to its threaded section unless needed then securely tighten the sensor to 41 N.m (30 lb ft). Reinstall the HO2S sensor electrical connector and proceed with lowering the vehicle when working on HO2S 2 or with replacing the fuel injector sight shield when working on HO2S 1.