What tools and precautions are necessary for replacing the Heated Oxygen Sensor (HO2S) on Buick Regal?

The replacement of heated Oxygen Sensor (HO2S) requires using the Oxygen Sensor wrench (J 39194) as a necessary tool. Proper handling of both ho2s and o2s requires attention to their in-line electrical connector and louvered end so they stay free from debris and contaminants but never use cleaning fluids because of safety concerns. Before removing bank 1 sensor 2 always verify your engine temperature exceeds 48°c (120°F) since this will defend against Exhaust Manifold or Exhaust Pipe threading damage. Perform the following sequence to start: turn off the ignition followed by vehicle lifting and support installation. To remove the ho2s electrical connector, first push out the tab protecting the electrical connector then detach the Oxygen Sensor connection from the connector assembly. The Oxygen Sensor wrench (J 39194) will extract the Oxygen Sensor from the Exhaust Pipe. The Oxygen Sensor threads require installation with a special anti-seize compound. Treatment should be already present on fresh sensors. Oxygen sensors getting new service require existing anti-seize compound but when reinstalling used sensors they need equivalent anti-seize compound p/n 5613695. The Oxygen Sensor needs to be installed into the Exhaust Pipe at a wrench torque of 41 n.m (30 lb ft). Secure the ho2s connector to its electrical connector while installing the retaining tab before lowering the vehicle.

OEM Buick Regal Oxygen Sensor

Oxygen O2 Sensor

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18 Oxygen Sensors found

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Buick Regal Oxygen Sensor
Part Number: 19209807
$87.79 MSRP: $178.30
You Save: $90.51 (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
- Replaces: 12570149, 12574924, 12572772
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 Buick Regal | GS, LS | 6 Cyl 3.8 L GAS
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Buick Regal Oxygen Sensor
Part Number: 19178938
$62.31 MSRP: $126.56
You Save: $64.25 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25165314, 25161152, 25312185
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993 Buick Regal | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
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Buick Regal 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 Buick Regal | GS, LS | 6 Cyl 3.8 L GAS
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Buick Regal Oxygen Sensor
Part Number: 19178958
$64.36 MSRP: $130.72
You Save: $66.36 (51%)
Ships in 1-2 Business Days
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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 Buick Regal | 25th Anniversary Edition, GS, GSE, LS, LSE | 6 Cyl 3.8 L GAS
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Buick Regal Oxygen Sensor
Part Number: 19178930
$65.10 MSRP: $132.24
You Save: $67.14 (51%)
Ships in 1-2 Business Days
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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:
- 1993-1996 Buick Regal | Custom, Gran Sport, Limited, Olympic Gold Edition | 6 Cyl 3.1 L GAS, 6 Cyl 3.8 L GAS
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Buick Regal Oxygen Sensor
Part Number: 19178924
$70.22 MSRP: $142.62
You Save: $72.40 (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:
- 1996-1999 Buick Regal | 25th Anniversary Edition, Custom, Gran Sport, GS, Limited, LS, Olympic Gold Edition | 6 Cyl 3.8 L GAS
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Buick Regal 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:
- 1999-2004 Buick Regal | GS, GSE, LS, LSE | 6 Cyl 3.8 L GAS
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Buick Regal Oxygen Sensor
Part Number: 12643707
$44.51 MSRP: $69.20
You Save: $24.69 (36%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor; Upper Oxygen Sensor
- Replaces: 12627139
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2017 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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Buick Regal Oxygen Sensor
Part Number: 12640115
$92.04 MSRP: $186.94
You Save: $94.90 (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:
- 2011-2013 Buick Regal | CXL, GS, Premium | 4 Cyl 2.0 L FLEX
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Buick Regal Oxygen Sensor
Part Number: 12616502
$80.12 MSRP: $162.72
You Save: $82.60 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Upper Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 12617648
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2017 Buick Regal | Base, CXL, GS, Premium | 4 Cyl 2.0 L FLEX, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick Regal 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 Buick Regal | Base, GNX, Grand National, Limited, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L DIESEL
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Buick Regal Oxygen Sensor
Part Number: 12618011
$50.69 MSRP: $142.74
You Save: $92.05 (65%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Rear Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011 Buick Regal | CXL | 4 Cyl 2.4 L GAS
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Buick Regal Oxygen Sensor
Part Number: 25176708
$55.59 MSRP: $112.89
You Save: $57.30 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor, Computer Control Sensors
- Replaces: 10096129
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993 Buick Regal | Custom, Limited | 6 Cyl 3.1 L GAS
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Buick Regal Oxygen Sensor
Part Number: 12661898
$63.34 MSRP: $128.67
You Save: $65.33 (51%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Lower Oxygen Sensor
- Replaces: 12643903
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2017 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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Buick Regal Oxygen Sensor
Part Number: 12656543
$68.17 MSRP: $191.98
You Save: $123.81 (65%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Lower Oxygen Sensor
- Replaces: 12646200, 12639693
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2017 Buick Regal | Base, CXL, Premium | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick Regal Oxygen Sensor
Part Number: 19178117
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25164155, 25133737
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Buick Regal | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
View related parts
Buick Regal Oxygen Sensor
Part Number: 19178937
Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25133791, 25312188
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Buick Regal | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
View related parts
Buick Regal Oxygen Sensor
Part Number: 19211437
$18.63 MSRP: $33.26
You Save: $14.63 (44%)
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Sensor, Emission Control Sensor(Vehicle Speed); Sensor, Emission Control Sensor(Oxygen)
- Replaces: 19178952, 25171573, 25166816, 25171574, 25162693, 25106073, 25107378, 25165118, 25171581, 25132068, 25165120, 25162600, 19178953, 19178943, 25133185, 25133076, 19178919, 25162753
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1993 Buick Regal | Custom, Gran Sport, Limited | 6 Cyl 2.8 L GAS, 6 Cyl 3.1 L GAS, 6 Cyl 3.8 L GAS

Buick Regal Oxygen Sensor

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Buick Regal Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
19178747
Q: What tools and precautions are necessary for replacing the Heated Oxygen Sensor (HO2S) on Buick Regal?
A: The replacement of heated Oxygen Sensor (HO2S) requires using the Oxygen Sensor wrench (J 39194) as a necessary tool. Proper handling of both ho2s and o2s requires attention to their in-line electrical connector and louvered end so they stay free from debris and contaminants but never use cleaning fluids because of safety concerns. Before removing bank 1 sensor 2 always verify your engine temperature exceeds 48°c (120°F) since this will defend against Exhaust Manifold or Exhaust Pipe threading damage. Perform the following sequence to start: turn off the ignition followed by vehicle lifting and support installation. To remove the ho2s electrical connector, first push out the tab protecting the electrical connector then detach the Oxygen Sensor connection from the connector assembly. The Oxygen Sensor wrench (J 39194) will extract the Oxygen Sensor from the Exhaust Pipe. The Oxygen Sensor threads require installation with a special anti-seize compound. Treatment should be already present on fresh sensors. Oxygen sensors getting new service require existing anti-seize compound but when reinstalling used sensors they need equivalent anti-seize compound p/n 5613695. The Oxygen Sensor needs to be installed into the Exhaust Pipe at a wrench torque of 41 n.m (30 lb ft). Secure the ho2s connector to its electrical connector while installing the retaining tab before lowering the vehicle.