How to service and repair the thermostat housing for the Thermostat Bypass Pipes Replacement (RPO L26) on Buick Lucerne?

For the service and repair of thermostat housing for the Thermostat Bypass Pipes Replacement (RPO L26), first remove the drive belt tensioner and then remove the thermostat bypass upper and lower pipes. For installation, seal the thermostat bypass upper and lower pipe seals with engine coolant before mounting the upper and lower pipes onto the tensioner, and finally reinstall the drive belt tensioner.

How to replace the Engine Coolant Thermostat Housing (LY7) on Buick LaCrosse?

Disconniecting the heater hoses from the Heater Core, removing the Thermostat and the Thermostat housing bolts are the factors that help in using the engine coolant Thermostat housing (LY7). Subsequently, remove the Thermostat housing, heater pipes, hoses, and bolts, and clear the sealing faces with help of a plastic gasket scraper (J 28410 or its kind). For the assembly, install the heater pipes and hoses to the Thermostat housing, and install a new gasket onto the Thermostat housing. Partially install the Thermostat housing bolts to hold the gasket before inserting the Thermostat housing with the heater pipes, hoses, gasket, and bolts. Make sure to finger tighten the Thermostat housing bolts to 20 n.m (15 lb ft) and then install the Thermostat. Lastly, reconnect heater hoses with the heater cores.

OEM Buick Thermostat Housing

Engine Coolant Thermostat Housing

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18 Thermostat Housings found

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Buick Thermostat Housing Part Number: 1647540
$11.19 MSRP: $21.01
You Save: $9.82 (47%)
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Product Specifications
- Other Name: Housing E; Thermostat Housing Cover; Water Outlet; Housing, Engine Coolant Thermostat
Fits the following Buick Models:
- Lucerne | 2006-2011 | CXL, CXS, Super | 8 Cyl 4.6 L GAS
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Buick Thermostat Housing Part Number: 12620112
$57.36 MSRP: $117.88
You Save: $60.52 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12567750, 12572988, 12602913
Fits the following Buick Models:
- Rainier | 2004-2007 | CXL, CXL Plus | 6 Cyl 4.2 L GAS
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Buick Thermostat Housing, Green Line Part Number: 12597172
$98.01 MSRP: $201.41
You Save: $103.40 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Engine Coolant Thermostat Housing; Thermostat Housing Cover; Water Manifold; Housing, Engine Coolant Thermostat
Fits the following Buick Models:
- LaCrosse | 2010-2016 | Base, Convenience, CX, CXL, Leather, Premium | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
- 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)
- 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 Thermostat Housing Part Number: 12572039
$64.38 MSRP: $116.52
You Save: $52.14 (45%)
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Product Specifications
- Other Name: Outlet, Water; Thermostat Housing Cover
Fits the following Buick Models:
- Rendezvous | 2004 | CXL, Ultra | 6 Cyl 3.6 L GAS
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Buick Thermostat Housing Part Number: 12605853
$99.70 MSRP: $204.86
You Save: $105.16 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
Fits the following Buick Models:
- Regal | 2011-2013 | CXL, GS, Premium | 4 Cyl 2.0 L FLEX
- Verano | 2013-2016 | Premium, Turbo | 4 Cyl 2.0 L GAS
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Buick Thermostat Housing Part Number: 12673413
$103.58 MSRP: $212.84
You Save: $109.26 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Water Inlet; Thermostat Unit; Housing, Engine Coolant Thermostat
- Replaced by: 25205818
Fits the following Buick Models:
- Encore | 2016-2022 | Base, Convenience, Essence, Leather, Preferred, Preferred II, Premium, Sport Touring | 4 Cyl 1.4 L GAS
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Buick Thermostat Housing Part Number: 25201447
$67.81 MSRP: $139.32
You Save: $71.51 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat Gasket; Thermostat; Thermostat Cover; Water Inlet; Housing, Engine Coolant Thermostat
- Replaces: 12651603
Fits the following Buick Models:
- 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
- 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 Thermostat Housing Part Number: 25201448
$50.57 MSRP: $149.64
You Save: $99.07 (67%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Cover; Water Inlet; Housing; Housing, Engine Coolant Thermostat
- Replaces: 12650241
Fits the following Buick Models:
- LaCrosse | 2018-2019 | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
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Buick Thermostat Housing Part Number: 12689041
$57.49 MSRP: $118.14
You Save: $60.65 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat Unit; Housing, Engine Coolant Thermostat
- Replaces: 12599235, 12638893
Fits the following Buick Models:
- Enclave | 2008-2017 | Base, Convenience, CX, CXL, Leather, Premium | 6 Cyl 3.6 L GAS
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Buick Thermostat Housing Part Number: 12689039
$74.81 MSRP: $153.74
You Save: $78.93 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12651113
Fits the following Buick Models:
- LaCrosse | 2010-2016 | Base, Convenience, CX, CXL, CXS, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick Thermostat Housing Part Number: 12681133
$72.64 MSRP: $149.28
You Save: $76.64 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12664190
Fits the following Buick Models:
- Enclave | 2018-2024 | Avenir, Base, Essence, Preferred, Premium | 6 Cyl 3.6 L GAS
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Buick Thermostat Housing, Lower Part Number: 1620610
Product Specifications
- Other Name: Housing-Engine Coolant Thermostat Lower; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Position: Lower
Fits the following Buick Models:
- 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
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Buick Thermostat Housing Part Number: 12597257
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Water Outlet; Housing, Engine Coolant Thermostat
- Replaces: 12574355
Fits the following Buick Models:
- LaCrosse | 2005-2008 | CXS | 6 Cyl 3.6 L GAS
- Rendezvous | 2004-2006 | CX, CXL, CXL Plus, Ultra | 6 Cyl 3.6 L GAS
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Buick Thermostat Housing, Upper Part Number: 1609644
Product Specifications
- Other Name: Housing-Engine Coolant Thermostat Upper; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Position: Upper
Fits the following Buick Models:
- 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
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Buick Thermostat Housing Part Number: 10181367
Product Specifications
- Other Name: Housing; Thermostat Housing Cover; Housing Kit, Engine Coolant Thermostat; Housing, Engine Coolant Thermostat
- Replaces: 10101865
Fits the following Buick Models:
- Century | 1991-1992 | Custom, Limited, Special | 4 Cyl 2.5 L GAS
- Skylark | 1991 | Base, Custom, Gran Sport, Luxury Edition | 4 Cyl 2.5 L GAS
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Buick Thermostat Housing Part Number: 10116251
Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover
Fits the following Buick Models:
- Skyhawk | 1986 | Custom, Limited, Sport, T-Type | 4 Cyl 1.8 L GAS
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Buick Thermostat Housing Part Number: 10116245
Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover; Housing Kit, Engine Coolant Thermostat
Fits the following Buick Models:
- Skyhawk | 1984-1985 | Custom, Limited, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
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Buick Thermostat Housing Part Number: 10116221
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
Fits the following Buick Models:
- Skyhawk | 1986 | Custom, Limited, Sport, T-Type | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS

Buick Thermostat Housing

Choose OEM Thermostat Housing, 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 ChevyPartsGiant.com, you'll find it easy to get top-quality OEM Buick Thermostat Housing. 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 Thermostat Housing Parts and Q&A

Thermostat Housing
1647540
Q: How to service and repair the thermostat housing for the Thermostat Bypass Pipes Replacement (RPO L26) on Buick Lucerne?
A:
For the service and repair of thermostat housing for the Thermostat Bypass Pipes Replacement (RPO L26), first remove the drive belt tensioner and then remove the thermostat bypass upper and lower pipes. For installation, seal the thermostat bypass upper and lower pipe seals with engine coolant before mounting the upper and lower pipes onto the tensioner, and finally reinstall the drive belt tensioner.
Thermostat Housing
12597257
Q: How to replace the Engine Coolant Thermostat Housing (LY7) on Buick LaCrosse?
A:
Disconniecting the heater hoses from the Heater Core, removing the Thermostat and the Thermostat housing bolts are the factors that help in using the engine coolant Thermostat housing (LY7). Subsequently, remove the Thermostat housing, heater pipes, hoses, and bolts, and clear the sealing faces with help of a plastic gasket scraper (J 28410 or its kind). For the assembly, install the heater pipes and hoses to the Thermostat housing, and install a new gasket onto the Thermostat housing. Partially install the Thermostat housing bolts to hold the gasket before inserting the Thermostat housing with the heater pipes, hoses, gasket, and bolts. Make sure to finger tighten the Thermostat housing bolts to 20 n.m (15 lb ft) and then install the Thermostat. Lastly, reconnect heater hoses with the heater cores.