How to replace the Heated Oxygen Sensor (HO2S) at Position 2 on Buick Rainier?

Before replacing the heated oxygen sensor (HO2S) located at position 2 it is necessary to lift the vehicle. To begin repairs disconnect the heated oxygen sensor electrical connector and remove the HO2S component through use of the Heated Oxygen Sensor Wrench (J 39194-B). When working with heated oxygen sensors it is crucial to apply anti-seize compound that includes graphite particles embedded in fluid with glass beads to the threaded areas of the sensor. This compound comes pre-applied to new or serviced sensors. The threads of the sensor need applying with anti-seize compound P/N 5613695 before performing reinstallation when using the same sensor. The heated oxygen sensor requires installation through the use of the Heated Oxygen Sensor Wrench (J 39194-B) just until it achieves 41 N.m (30 lb ft) of torque. Completing the installation requires connection of the HO2S electrical connector and a vehicle lowering.

OEM Buick Rainier Oxygen Sensor

Oxygen O2 Sensor

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13 Oxygen Sensors found

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Buick Rainier Oxygen Sensor Part Number: 12573721
$63.75 MSRP: $129.48
You Save: $65.73 (51%)
Ships in 1-2 Business Days
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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:
- 2004 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12590749
$47.03 MSRP: $95.51
You Save: $48.48 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12592591
$39.35 MSRP: $79.91
You Save: $40.56 (51%)
Ships in 1-2 Business Days
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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:
- 2006-2007 Buick Rainier | CXL | 6 Cyl 4.2 L GAS
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Buick Rainier Oxygen Sensor Part Number: 19209808
$72.40 MSRP: $147.04
You Save: $74.64 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 12575389, 19256731, 25333812, 12583806, 19210711, 12573168
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
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Buick Rainier Rear Oxygen Sensor Part Number: 12604538
$100.18 MSRP: $186.94
You Save: $86.76 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Buick Rainier | CXL | 6 Cyl 4.2 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12586996
$84.49 MSRP: $171.60
You Save: $87.11 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12585999
$93.88 MSRP: $190.68
You Save: $96.80 (51%)
Ships in 1-2 Business Days
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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:
- 2006-2007 Buick Rainier | CXL | 6 Cyl 4.2 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12578624
$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; Front Oxygen Sensor
- Replaces: 24577303
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS
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Buick Rainier Oxygen Sensor Part Number: 19209805
$85.68 MSRP: $174.02
You Save: $88.34 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 12581346, 12590750, 19256730, 19210712
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12573167
$54.84 MSRP: $102.98
You Save: $48.14 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
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Buick Rainier Oxygen Sensor Part Number: 12567127
$36.64 MSRP: $114.28
You Save: $77.64 (68%)
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:
- 2004 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
View related parts
Buick Rainier Oxygen Sensor Part Number: 19209816
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 12611870, 12600893
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
View related parts
Buick Rainier Oxygen Sensor Part Number: 12567163
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:
- 2004 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS

Buick Rainier 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 Rainier parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick Rainier 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 is a part that is hugely valued in defining the reliability and performance of the Buick Rainier, which is a mid-size luxury SUV built between 2004 and 2007. This Oxygen Sensor is indispensable as it helps in measuring the air/fuel mixture in the engine exhaust, increase in performance and a startling decrease in emissions. Due to the presence of oxygen in the exhaust, the Buick Rainier Oxygen Sensor generates a voltage signal and allows the engine control computer to calculate the fuel injector device for optimized function. For instance, the sensor comes with a zirconium dioxide sensing element that is coated with platinum to enable it offer long-term service and at the same time respond to changes in the operating environment within the shortest time. Flexibility in working with different kinds of Buick Rainier makes it even more appealing, as it is compatible with both the basic 4.2L Vortec I6 and the enhanced 5.3L Small-block V8 engines resulting in the high rates of the SUV's performance. The Buick Rainier Oxygen Sensor enables closed loop operation to be maintained, which means that catalytic converter can work effectively while also reducing noxious pollutants; This ultimately leads to economic benefits and at the same time safety. Furthermore, accurately, the superior structure of the sensor measures the required amount of fuel and avoids the use of excess fuel that harms the car's overall performance. When it comes to the construction and the equipment, the Buick Rainier Oxygen Sensor is exceptional contributing to the overall image of the Buick Rainier as the car that provides the customer with a safe, economical, and powerful driving experience.

Buick Rainier Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
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Q: How to replace the Heated Oxygen Sensor (HO2S) at Position 2 on Buick Rainier?
A:
Before replacing the heated oxygen sensor (HO2S) located at position 2 it is necessary to lift the vehicle. To begin repairs disconnect the heated oxygen sensor electrical connector and remove the HO2S component through use of the Heated Oxygen Sensor Wrench (J 39194-B). When working with heated oxygen sensors it is crucial to apply anti-seize compound that includes graphite particles embedded in fluid with glass beads to the threaded areas of the sensor. This compound comes pre-applied to new or serviced sensors. The threads of the sensor need applying with anti-seize compound P/N 5613695 before performing reinstallation when using the same sensor. The heated oxygen sensor requires installation through the use of the Heated Oxygen Sensor Wrench (J 39194-B) just until it achieves 41 N.m (30 lb ft) of torque. Completing the installation requires connection of the HO2S electrical connector and a vehicle lowering.