How to Replace a Coolant Temperature Sensor on Buick Regal?

For replacement of Fluid temperature sensor (391), we need to Remove the case side cover, disconnect the Fluid temperature sensor from its electrical connector, then remove the Fluid temperature sensor (391). For installation, one of the steps is to install the fluid temperature sensor (391), reconnect the fluid temperature sensor electrical connector and lastly fix the case side cover.

How to Replace a Coolant Temperature Sensor on Buick Enclave?

When changing the Engine Coolant Temperature Sensor, drain the cooling system using the appropriate. Push the electrical connector heat shield up the wiring harness and remove the engine wiring harness electrical connector from the engine coolant temperature (ECT) sensor. Since this is a service procedure, the ECT sensor is removed from the vehicle and then replaced by another new ECT sensor and tightened (to 22 Nm (16 lb ft)). Another method used is to substitute a new throttle body and bolt it to the engine manifold. Always ensure proper diagnostics are set up before proceeding. The ECT sensor and slide the electrical connector heat shield down over the connector. Connect the engine wiring harness electrical connector to the ECT sensor and slide theistream electrical connector heat shield down over the connector. Finally, deflate the cooling system using the approved filling procedure.

OEM Buick Coolant Temperature Sensor

Coolant Water Temperature Sensor

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36 Coolant Temperature Sensors found

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Buick Coolant Temperature Sensor, Black Part Number: 12608814
$31.43 MSRP: $59.02
You Save: $27.59 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Engine Coolant Temperature *Ite Or Black; Engine Coolant Temperature Sensor; Temperature Sensor
- Replaces: 12191170, 15369305, 15326388, 25037062
Fits the following Buick Models:
- Enclave | 2018-2024 | Avenir, Base, Essence, Preferred, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2008-2016 | Base, CX, CXL, Convenience, Leather, Premium, Super | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 5.3 L GAS
- Lucerne | 2009-2011 | CX, CXL, CXL Special Edition | 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
- Rainier | 2004-2007 | CXL, CXL Plus | 8 Cyl 5.3 L GAS
- Regal | 2011-2017 | 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)
- Rendezvous | 2006-2007 | CX, CXL | 6 Cyl 3.5 L GAS
- Terraza | 2005-2007 | CX, CXL | 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
- Verano | 2012-2017 | Base, Convenience, Leather, Premium, Sport Touring, Turbo | 4 Cyl 2.0 L GAS, 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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Buick Coolant Temperature Sensor Part Number: 12650595
$7.71 MSRP: $16.04
You Save: $8.33 (52%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor
Fits the following Buick Models:
- LaCrosse | 2017-2019 | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
- Regal Sportback | 2018-2020 | GS | 6 Cyl 3.6 L GAS
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Buick Coolant Temperature Sensor Part Number: 12656444
$11.78 MSRP: $24.53
You Save: $12.75 (52%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor
- Replaces: 12636534
Fits the following Buick Models:
- Cascada | 2016-2019 | Base, Premium, Sport Touring | 4 Cyl 1.6 L GAS
- Envision | 2016-2020 | Base, Essence, Preferred, Premium, Premium II | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L FLEX, 4 Cyl 2.5 L GAS
- LaCrosse | 2018-2019 | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
- Regal | 2014-2017 | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
- Regal Sportback | 2018-2020 | Avenir, Base, Essence, Preferred, Preferred II | 4 Cyl 2.0 L GAS
- Regal TourX | 2018-2020 | Base, Essence, Preferred | 4 Cyl 2.0 L GAS
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Buick Coolant Temperature Sensor, Silver Part Number: 55591002
$10.34 MSRP: $19.42
You Save: $9.08 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 55563530, 89019319
Fits the following Buick Models:
- Cascada | 2016-2019 | Base, Premium, Sport Touring | 4 Cyl 1.6 L GAS
- Encore | 2013-2021 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
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Buick Coolant Temperature Sensor Part Number: 12641073
$12.90 MSRP: $24.22
You Save: $11.32 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor
Fits the following Buick Models:
- Encore | 2016-2022 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
- Encore GX | 2020-2025 | Essence, Preferred, Select | 3 Cyl 1.2 L FLEX, 3 Cyl 1.2 L GAS
- Envista | 2024-2025 | Avenir, Preferred, Sport Touring | 3 Cyl 1.2 L FLEX, 3 Cyl 1.2 L GAS
- LaCrosse | 2017-2019 | Avenir, Base, Essence, Preferred, Premium, Sport Touring | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.6 L GAS
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Buick Coolant Temperature Sensor Part Number: 12611420
$18.35 MSRP: $34.46
You Save: $16.11 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor; Temperature Sensor; Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- LaCrosse | 2012-2016, 2010 | Base, CX, CXL, Convenience, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- Regal | 2011-2017 | Base, CXL, GS, Premium, Sport Touring | 4 Cyl 2.0 L FLEX, 4 Cyl 2.0 L GAS
- Verano | 2013-2016 | Premium, Turbo | 4 Cyl 2.0 L GAS
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Buick Coolant Temperature Sensor, Gold Part Number: 55591401
$20.59 MSRP: $38.66
You Save: $18.07 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor
- Replaces: 55353807
Fits the following Buick Models:
- Encore | 2013-2021 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
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Buick Coolant Temperature Sensor Part Number: 15326386
$25.59 MSRP: $48.06
You Save: $22.47 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Engine Coolant Temperature; Air Charge Temperature Sensor; Intake Air Temperature Sensor.
- Replaces: 12146312, 25036979
Fits the following Buick Models:
- Century | 2004-2005, 1997-2000, 1985-1991 | Custom, Estate Wagon, Limited, Special, Special Edition, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.1 L GAS, 6 Cyl 3.3 L GAS, 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L DIESEL
- Electra | 1985-1990 | Estate Wagon, Limited, Park Avenue, Park Avenue Ultra, T-Type | 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- LaCrosse | 2005-2009 | CX, CXL | 6 Cyl 3.8 L GAS
- LeSabre | 2000-2005, 1985-1995 | Base, Collector's Edition, Custom, Estate Wagon, Limited, T-Type | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- Lucerne | 2006-2011 | CXL, CXS, Super | 8 Cyl 4.6 L GAS
- Park Avenue | 2000-2005, 1991-1995 | Base, Ultra | 6 Cyl 3.8 L GAS
- Reatta | 1988-1991 | Base | 6 Cyl 3.8 L GAS
- Regal | 1985-2004 | 25th Anniversary Edition, Base, Custom, GNX, GS, GSE, Gran Sport, Grand National, LS, LSE, Limited, Olympic Gold Edition, T-Type | 6 Cyl 2.8 L GAS, 6 Cyl 3.1 L GAS, 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L DIESEL, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- Rendezvous | 2002-2005 | CX, CX Plus, CXL, CXL Plus | 6 Cyl 3.4 L GAS
- Riviera | 1995-1996, 1984-1993 | Base, Luxury, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
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Buick Coolant Temperature Sensor Part Number: 12601050
$27.13 MSRP: $50.94
You Save: $23.81 (47%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor, Engine Coolant Temperature
- Replaces: 12609558, 12590959, 12586299
Fits the following Buick Models:
- Rainier | 2006-2007 | CXL | 6 Cyl 4.2 L GAS
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Buick Coolant Temperature Sensor Part Number: 12639899
$29.15 MSRP: $54.74
You Save: $25.59 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor; Temperature Sensor; Sensor, Coolant Temperature (Engine Unit)
- Replaces: 12566778
Fits the following Buick Models:
- Enclave | 2008-2017 | Base, CX, CXL, Convenience, Leather, Premium | 6 Cyl 3.6 L GAS
- LaCrosse | 2010-2011, 2005-2008 | CX, CXL, CXS | 6 Cyl 3.6 L GAS
- Rendezvous | 2004-2005 | CXL, CXL Plus, Ultra | 6 Cyl 3.6 L GAS
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Buick Coolant Temperature Sensor Part Number: 10232601
$22.45 MSRP: $76.18
You Save: $53.73 (71%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Temperature Sending Unit
Fits the following Buick Models:
- Regal | 1992-1995 | Custom, Limited | 6 Cyl 3.1 L GAS
- Skylark | 1994-1995 | Custom, Gran Sport, Limited | 6 Cyl 3.1 L GAS
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Buick Temperature Sending Unit Part Number: 25036649
$23.08 MSRP: $70.14
You Save: $47.06 (68%)
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Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Skyhawk | 1984 | Custom, Limited | 4 Cyl 2.0 L GAS
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Buick Coolant Temperature Sensor Part Number: 55488246
$5.34 MSRP: $10.02
You Save: $4.68 (47%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Engine Coolant Temperature Sensor
Fits the following Buick Models:
- Encore GX | 2020-2025 | Avenir, Essence, Preferred, Select, Sport Touring | 3 Cyl 1.3 L GAS
- Envision | 2021-2025 | Avenir, Essence, Preferred, Sport Touring | 4 Cyl 2.0 L GAS
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Buick Coolant Temperature Sensor Part Number: 10096181
$31.11 MSRP: $58.42
You Save: $27.31 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
Fits the following Buick Models:
- Century | 1994-2003 | Custom, Limited, Special | 4 Cyl 2.2 L GAS, 6 Cyl 3.1 L GAS
- LeSabre | 1995-1999 | Custom, Limited | 6 Cyl 3.8 L GAS
- Park Avenue | 1995-1999 | Base, Ultra | 6 Cyl 3.8 L GAS
- Regal | 1995-2003 | 25th Anniversary Edition, Custom, GS, GSE, Gran Sport, LS, LSE, Limited, Olympic Gold Edition | 6 Cyl 3.1 L GAS, 6 Cyl 3.8 L GAS
- Riviera | 1995-1999 | Base | 6 Cyl 3.8 L GAS
- Skylark | 1996 | Custom, Gran Sport, Limited, Olympic Gold Edition | 6 Cyl 3.1 L GAS
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Buick Temperature Sending Unit Part Number: 10137628
$37.39 MSRP: $70.21
You Save: $32.82 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Roadmaster | 1991-1993 | Base, Estate Wagon, Limited | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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Buick Coolant Temperature Sensor Part Number: 25037332
$43.36 MSRP: $77.42
You Save: $34.06 (44%)
Product Specifications
- Other Name: Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- LeSabre | 1992-1995 | Custom, Limited | 6 Cyl 3.8 L GAS
- Park Avenue | 1994 | Base, Ultra | 6 Cyl 3.8 L GAS
- Regal | 1990-1995 | Custom, Gran Sport, Limited | 6 Cyl 3.8 L GAS
- Roadmaster | 1994-1996 | Base, Estate Wagon, Estate Wagon Collector's Edition, Limited | 8 Cyl 5.7 L GAS
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Buick Fan Switch Part Number: 3040674
Product Specifications
- Other Name: Fan Control S; Cooling Fan Temperature Switch
Fits the following Buick Models:
- Century | 1984-1987 | Custom, Estate, Estate Wagon, Limited, Olympia Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Electra | 1985-1988 | Limited, Park Avenue, T-Type | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- LeSabre | 1986-1988 | Base, Custom, Limited, T-Type | 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Skyhawk | 1984-1986 | Custom, Limited, Sport, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Skylark | 1984-1991 | Base, Custom, Gran Sport, Limited, Luxury Edition, T-Type | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
- Somerset | 1986-1987 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
- Somerset Regal | 1985 | Base, Limited | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
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Buick Coolant Temperature Switch Part Number: 25036601
Product Specifications
- Other Name: Switch Assembly, Early Fuel Evaporation Heater Engine Coolant Temperature
Fits the following Buick Models:
- Skyhawk | 1984 | Custom, Limited, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Skylark | 1984-1985 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
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Buick Coolant Temperature Sensor Part Number: 25036628
Product Specifications
- Other Name: Sensor, Computer Control Sensors
Fits the following Buick Models:
- Century | 1984-1985 | Custom, Estate Wagon, Limited | 6 Cyl 4.3 L DIESEL
- LeSabre | 1988 | Base, Custom, Limited | 6 Cyl 3.8 L GAS
- Riviera | 1984-1985 | Base, Luxury, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
- Skylark | 1986-1990 | Custom, Gran Sport, Limited, Luxury Edition | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
- Somerset | 1986-1987 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
- Somerset Regal | 1985 | Base, Limited | 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L GAS
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Buick Temperature Sending Unit Part Number: 8993146
Product Specifications
- Other Name: Sensor Assembly-Engine Wtr Temperature (1 Terminal); Sensor, Coolant Temperature (Engine Unit)
Fits the following Buick Models:
- Century | 1984-1988 | Custom, Estate Wagon, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.8 L GAS
- Skyhawk | 1984-1987 | Custom, Limited, Sport, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- Skylark | 1984-1985 | Custom, Limited, T-Type | 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS
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Buick Coolant Temperature Sensor

Choose OEM Coolant Temperature Sensor, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Buick's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Buick Coolant Temperature Sensor. You can shop at highly competitive prices and protect your budget. All our genuine Buick parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Buick Coolant Temperature Sensor maintains an engine heat check that ensures a more consistent performance and better-safe drives. Buick strikes a balance between the generations of tradition and innovations that make driving every day more relaxed and comfortable. In 1903 the company began manufacturing automobiles and continued to add to the ride comfort by fine-tuning the engine, seating comfort, and surfaces that absorb noise on the road enabling the occupants to converse without shouting. It introduced driver-oriented updates annually in the form of user-friendly dashboard designs to automatic gearboxes that drive naturally even when there is a traffic jam. The brand also has a vision; the concept Wildcat EV demonstrates smooth lines, bright lights, and an all-electric engine that will be applied on the streets tomorrow. Buyers observe how Buick integrates these progressions into the relaxed position with which previous models had been popular during longer highway journeys. Families enjoy the spacious cabins and clean lines in urban areas and find the same sense of calmness in the driver seat. Coolant Temperature Sensor measures the liquid flowing through the block, creates voltage signals that increase and decrease with each degree, permits the control unit to adjust the fine-tuning of the fuel mix, spark timing, and fan speed within milliseconds and in the process maintains horsepower constant, restricts the amount of fuel combusted, and keeps metal components safely below the danger zone. The Coolant Temperature Sensor is installed on the engine head, in the coolant stream, can be plugged directly into the existing wiring, and it is not prone to vibration or splashing of chemicals; thus, the same reliable data will flow to the computer each year.

Buick Coolant Temperature Sensor Parts and Q&A

Coolant Temperature Sensor
15326386
Q: How to Replace a Coolant Temperature Sensor on Buick Regal?
A:
For replacement of Fluid temperature sensor (391), we need to Remove the case side cover, disconnect the Fluid temperature sensor from its electrical connector, then remove the Fluid temperature sensor (391). For installation, one of the steps is to install the fluid temperature sensor (391), reconnect the fluid temperature sensor electrical connector and lastly fix the case side cover.
Coolant Temperature Sensor
12639899
Q: How to Replace a Coolant Temperature Sensor on Buick Enclave?
A:
When changing the Engine Coolant Temperature Sensor, drain the cooling system using the appropriate. Push the electrical connector heat shield up the wiring harness and remove the engine wiring harness electrical connector from the engine coolant temperature (ECT) sensor. Since this is a service procedure, the ECT sensor is removed from the vehicle and then replaced by another new ECT sensor and tightened (to 22 Nm (16 lb ft)). Another method used is to substitute a new throttle body and bolt it to the engine manifold. Always ensure proper diagnostics are set up before proceeding. The ECT sensor and slide the electrical connector heat shield down over the connector. Connect the engine wiring harness electrical connector to the ECT sensor and slide theistream electrical connector heat shield down over the connector. Finally, deflate the cooling system using the approved filling procedure.