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.

OEM Buick Lucerne Thermostat Housing

Engine Coolant Thermostat Housing

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Buick Lucerne Thermostat Housing
Part Number: 1647540
$11.19 MSRP: $21.01
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Product Specifications
- Other Name: Housing E; Thermostat Housing Cover; Water Outlet; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2011 Buick Lucerne | CXL, CXS, Super | 8 Cyl 4.6 L GAS

Buick Lucerne Thermostat Housing

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Buick Lucerne Thermostat Housing Parts Questions & Experts Answers

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.