How to service and repair the thermostat on 2005 Mercury Montego?

In order to fix the thermostat, disassemble the housing with the three bolts, and then disassemble the upper and bottom housing. Change the thermostat, making it fit correctly. Apply coolant to a new O-ring and reassemble the lower housing. screw bolts with 10 Nm, and add the housing and bleed the cooling system.

OEM 2005 Mercury Montego Thermostat

Engine Coolant Thermostat

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2005 Mercury Montego Thermostat Part Number: 5F9Z-8575-A
$20.33 MSRP: $31.45
You Save: $11.12 (36%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: 5F9Z-8575-AA, RT-1182
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5F9Z-8575-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2005 Mercury Montego Submodels:
- Luxury, Premier | 6 Cyl 3.0 L GAS

2005 Mercury Montego Thermostat

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2005 Mercury Montego Thermostat Parts Q&A

Q: How to service and repair the thermostat on 2005 Mercury Montego?
A: In order to fix the thermostat, disassemble the housing with the three bolts, and then disassemble the upper and bottom housing. Change the thermostat, making it fit correctly. Apply coolant to a new O-ring and reassemble the lower housing. screw bolts with 10 Nm, and add the housing and bleed the cooling system.