How to replace the Heated Oxygen Sensor (HO2S) on 2007 Buick LaCrosse?

To replace the heated Oxygen Sensor (HO2S), locate the Oxygen Sensor electrical connector by disconnecting it and do not apply too much pressure that might damage the threads in the Exhaust Manifold /pipe. If the engine temperature is below 48°C (120°F) then the Oxygen Sensor will tend to become hard to remove, one should ensure that the engine of the opa has been properly been warmed up. Then, take away the heated Oxygen Sensor. On the installation of the new or reused sensor apply an anti-seize compound; item part number 5613695, or an equivalent, to the threads if not already pre-applied. Remove the round punch from the ho2s package and install it to 1 to 42 n.m, (31 lb ft) and reconnect the Oxygen Sensor electrical connector. Treat the ho2s and the o2s gently, ensuring the in-line electrical connector and the louvered end of both parts are free of grease, dirt, or other type of contamination and refrain from using cleaning solvents or dropping the sensors.

OEM 2007 Buick LaCrosse Oxygen Sensor

Oxygen O2 Sensor

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6 Oxygen Sensors found

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2007 Buick LaCrosse Oxygen Sensor Part Number: 19209817
$81.40 MSRP: $165.32
You Save: $83.92 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 12616672
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.2 x 3.1 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19209817
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2007 Buick LaCrosse Submodels:
- CX, CXL | 6 Cyl 3.8 L GAS
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2007 Buick LaCrosse 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
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.4 x 3.4 x 3.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19209807
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2007 Buick LaCrosse Submodels:
- CX, CXL | 6 Cyl 3.8 L GAS
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2007 Buick LaCrosse Oxygen Sensor Part Number: 19209814
$59.22 MSRP: $120.28
You Save: $61.06 (51%)
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Product Specifications
- Other Name: Sensor Assembly, Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 12574218
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.2 x 3.2 x 3.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 19209814
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Buick LaCrosse Submodels:
- CX, CXL | 6 Cyl 3.8 L GAS
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2007 Buick LaCrosse Oxygen Sensor Part Number: 12587096
$93.48 MSRP: $189.85
You Save: $96.37 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Wideband Air/Fuel Sensor; Air / Fuel Ratio Sensor; Air/Fuel Sensor; Front Oxygen Sensor; Sensor, Computer Control Sensors
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.3 x 3.1 x 3.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12587096
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2007 Buick LaCrosse Submodels:
- CXS | 6 Cyl 3.6 L GAS
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2007 Buick LaCrosse Oxygen Sensor Part Number: 12597878
$51.58 MSRP: $104.78
You Save: $53.20 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.1 x 3.1 x 3.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12597878
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Buick LaCrosse Submodels:
- CX, CXL | 6 Cyl 3.8 L GAS
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2007 Buick LaCrosse Oxygen Sensor Part Number: 12584050
$49.06 MSRP: $88.81
You Save: $39.75 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Rear Oxygen Sensor; Front Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 12603139
- Item Weight: 0.50 Pounds
- Item Dimensions: 7.4 x 2.0 x 2.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12584050
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 Buick LaCrosse Submodels:
- CXS | 6 Cyl 3.6 L GAS

2007 Buick LaCrosse Oxygen Sensor

With a comprehensive array of OEM 2007 Buick LaCrosse Oxygen Sensor, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2007 Buick LaCrosse Oxygen Sensor are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2007 Buick LaCrosse Oxygen Sensor Parts and Q&A

Q: How to replace the Heated Oxygen Sensor (HO2S) on 2007 Buick LaCrosse?
A: To replace the heated Oxygen Sensor (HO2S), locate the Oxygen Sensor electrical connector by disconnecting it and do not apply too much pressure that might damage the threads in the Exhaust Manifold /pipe. If the engine temperature is below 48°C (120°F) then the Oxygen Sensor will tend to become hard to remove, one should ensure that the engine of the opa has been properly been warmed up. Then, take away the heated Oxygen Sensor. On the installation of the new or reused sensor apply an anti-seize compound; item part number 5613695, or an equivalent, to the threads if not already pre-applied. Remove the round punch from the ho2s package and install it to 1 to 42 n.m, (31 lb ft) and reconnect the Oxygen Sensor electrical connector. Treat the ho2s and the o2s gently, ensuring the in-line electrical connector and the louvered end of both parts are free of grease, dirt, or other type of contamination and refrain from using cleaning solvents or dropping the sensors.