How to replace the Heated Oxygen Sensor (HO2S) for Bank 1 Sensor 1 on Buick Enclave?

The first step to replace heated Oxygen Sensor (HO2S) for bank 1 sensor 1 requires vehicle stabilization in a secure position. Unplug the engine wiring harness electrical connection at the ho2s connector then remove its housing from the harness clip. Remove the ho2s from its position on the Exhaust Manifold. Install the ho2s by applying anti-seize compound gm p/n 12377953 or comparable substances to the threads if using a recycled sensor. The ho2s utilizes a special anti-seize containing liquid graphite and glass beads to simplify sensor removal. Apply 42 nm (31 lb ft) of torque while reinstalling the ho2s onto the Exhaust Manifold. Attach the engine wiring harness electrical connector to its ho2s electrical connector. Also fasten the ho2s electrical connector retainer to the engine wiring harness clip. Finally, lower the vehicle.

OEM Buick Enclave Oxygen Sensor

Oxygen O2 Sensor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

7 Oxygen Sensors found

View related parts
Buick Enclave Oxygen Sensor Part Number: 12667438
$41.61 MSRP: $84.51
You Save: $42.90 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Pre-Catalyst Bank 2 S; Rear Oxygen Sensor; Front Oxygen Sensor; Upper Oxygen Sensor; Lower Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2024 Buick Enclave | Avenir, Base, Essence, Preferred, Premium | 6 Cyl 3.6 L GAS
View related parts
Buick Enclave Oxygen Sensor Part Number: 12634061
$48.88 MSRP: $87.28
You Save: $38.40 (44%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor; Upper Oxygen Sensor; Lower Oxygen Sensor
- Replaces: 12607333
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2011 Buick Enclave | CX, CXL | 6 Cyl 3.6 L GAS
View related parts
Buick Enclave Oxygen Sensor Part Number: 12616125
$69.02 MSRP: $140.18
You Save: $71.16 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2011 Buick Enclave | CX, CXL | 6 Cyl 3.6 L GAS
View related parts
Buick Enclave Oxygen Sensor Part Number: 12594452
$54.19 MSRP: $110.06
You Save: $55.87 (51%)
Ships in 1-3 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:
- 2008 Buick Enclave | CX, CXL | 6 Cyl 3.6 L GAS
View related parts
Buick Enclave Oxygen Sensor Part Number: 12634085
$113.76 MSRP: $320.30
You Save: $206.54 (65%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2017 Buick Enclave | Base, Convenience, Leather, Premium | 6 Cyl 3.6 L GAS
View related parts
Buick Enclave Oxygen Sensor Part Number: 12634064
$77.31 MSRP: $157.02
You Save: $79.71 (51%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor; Lower Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2017 Buick Enclave | Base, Convenience, Leather, Premium | 6 Cyl 3.6 L GAS
View related parts
Buick Enclave Oxygen Sensor Part Number: 12597947
$84.49 MSRP: $171.60
You Save: $87.11 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 Buick Enclave | CX, CXL | 6 Cyl 3.6 L GAS

Buick Enclave Oxygen Sensor

Want to cut long-term maintenance and repair costs? Choose OEM Oxygen Sensor. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Buick Enclave parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick Enclave Oxygen Sensor includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

The Oxygen Sensor in Buick Enclave cars is important as it tracks the air/fuel relation in the engine exhaust to ensure perfect functioning and minimum pollution. Thus, contrasting the level of oxygen in the exhaust to that of fresh air, the sensor produces a voltage signal to the engine control computer regarding the mixture quality: rich or lean. This feedback enables the computer to vary the fuel injector pulse width in a manner to get maximum conversion efficiency of the catalytic converter and at the same time reducing emissions to a minimum. A Buick Enclave automobile requires at least two oxygen sensors, one before the catalytic converter and the other after it; the pre-converter sensor is especially this feedback source. The sensor works at high temperature and may degrade with time mainly due to contamination. Air/fuel ratio sensors that are advanced than oxygen sensors, could be available in some newer automobiles to provide improved measurement of air/fuel ratio.

Buick Enclave Oxygen Sensor Parts and Q&A

Oxygen Sensor
12616125
Q: How to replace the Heated Oxygen Sensor (HO2S) for Bank 1 Sensor 1 on Buick Enclave?
A:
The first step to replace heated Oxygen Sensor (HO2S) for bank 1 sensor 1 requires vehicle stabilization in a secure position. Unplug the engine wiring harness electrical connection at the ho2s connector then remove its housing from the harness clip. Remove the ho2s from its position on the Exhaust Manifold. Install the ho2s by applying anti-seize compound gm p/n 12377953 or comparable substances to the threads if using a recycled sensor. The ho2s utilizes a special anti-seize containing liquid graphite and glass beads to simplify sensor removal. Apply 42 nm (31 lb ft) of torque while reinstalling the ho2s onto the Exhaust Manifold. Attach the engine wiring harness electrical connector to its ho2s electrical connector. Also fasten the ho2s electrical connector retainer to the engine wiring harness clip. Finally, lower the vehicle.