How to replace the thermostat housing (LY7) on Buick LaCrosse?

To replace the Thermostat Housing (LY7), one should start disconnecting the heater hoses from the heater core, then remove the Thermostat as well as the Thermostat Housing bolts. Next, disconnect the Thermostat Housing as well as the heater pipes, hoses, and bolts, and clean the sealing surfaces with a plastic gasket scraper (J 28410 or equivalent) very carefully. Unto installation, assemble the heater pipes and hoses to Thermostat Housing, then put on a new gasket into the Thermostat Housing. Monte the Thermostat Housing bolts partially to hold the gasket in place before installing the Thermostat Housing with the heater pipes, hoses, gasket, and bolts. Make sure to install the Thermostat Housing bolts and tighten them to 20 nm (15 ft. Lbs.). Last, install the Thermostat and reconnect the heater hoses to the heater core.

OEM Buick LaCrosse Thermostat Housing

Engine Coolant Thermostat Housing

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).

4 Thermostat Housings found

View related parts
Buick LaCrosse Thermostat Housing, Green Line
Part Number: 12597172
$96.09 MSRP: $197.47
You Save: $101.38 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Engine Coolant Thermostat Housing; Thermostat Housing Cover; Water Manifold; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather, Premium | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick LaCrosse Thermostat Housing
Part Number: 25201448
$71.39 MSRP: $146.70
You Save: $75.31 (52%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Cover; Water Inlet; Housing; Housing, Engine Coolant Thermostat
- Replaces: 12650241
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
View related parts
Buick LaCrosse Thermostat Housing
Part Number: 12689039
$73.35 MSRP: $150.72
You Save: $77.37 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12651113
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | 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
View related parts
Buick LaCrosse Thermostat Housing
Part Number: 12597257
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Water Outlet; Housing, Engine Coolant Thermostat
- Replaces: 12574355
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS

Buick LaCrosse Thermostat Housing

Our website offers an extensive catalog of genuine Buick LaCrosse Thermostat Housing at unbeatable prices. Every OEM Buick LaCrosse Thermostat Housing comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Buick LaCrosse Thermostat Housing Parts Questions & Experts Answers

Thermostat Housing
12597257
Q: How to replace the thermostat housing (LY7) on Buick LaCrosse?
A: To replace the Thermostat Housing (LY7), one should start disconnecting the heater hoses from the heater core, then remove the Thermostat as well as the Thermostat Housing bolts. Next, disconnect the Thermostat Housing as well as the heater pipes, hoses, and bolts, and clean the sealing surfaces with a plastic gasket scraper (J 28410 or equivalent) very carefully. Unto installation, assemble the heater pipes and hoses to Thermostat Housing, then put on a new gasket into the Thermostat Housing. Monte the Thermostat Housing bolts partially to hold the gasket in place before installing the Thermostat Housing with the heater pipes, hoses, gasket, and bolts. Make sure to install the Thermostat Housing bolts and tighten them to 20 nm (15 ft. Lbs.). Last, install the Thermostat and reconnect the heater hoses to the heater core.