How to service and repair the thermostat in a 3.9L engine on Lincoln LS?

To fix the thermostat of a 3.9L engine, remove the engine cover, air cleaner tube, drain the cooling system and proceed with a removal sequence according to order as shown in the illustrations. Install parts, fill and bleed the cooling system. Installation Use an 18 mm wrench to fix the thermostat, and make sure it is placed correctly.

How to service the thermostat for the 3.9L engine on Lincoln LS?

To maintain the 3.9L engine thermostat, empty the cooling system and dismount the housing. Loosen/ unlock and take out the thermostat and its parts using an 18 mm wrench. Install the new thermostat and make sure it is aligned straight and fixed. Install the housing again and refuel the cooling system.

OEM Lincoln LS Thermostat

Engine Coolant Thermostat

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4 Thermostats found

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Lincoln LS Thermostat Part Number: XW4Z-8575-CA
$17.06 MSRP: $27.09
You Save: $10.03 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Manufacturer Note: Thermostat Assy
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2002 Lincoln LS | Base, LSE | 8 Cyl 3.9 L GAS
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Lincoln LS Thermostat Part Number: 1X4Z-8575-DB
$10.22 MSRP: $14.14
You Save: $3.92 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Assembly
- Manufacturer Note: Requires F1VY 8255 A Seal
- Replaces: 1X4Z-8575-DA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2005 Lincoln LS | Appearance, Base, LSE, Luxury, Premium | 6 Cyl 3.0 L GAS
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Lincoln LS Thermostat Part Number: 2W9Z-8575-AB
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2006 Lincoln LS | Base, LSE, Sport, Ultimate | 8 Cyl 3.9 L GAS
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Lincoln LS Thermostat Part Number: XW4Z-8575-AA
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Manufacturer Note: Requires F1VY 8255 A Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2002 Lincoln LS | Base, LSE | 6 Cyl 3.0 L GAS

Lincoln LS Thermostat

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Lincoln LS Thermostat Parts and Q&A

Thermostat
1X4Z-8575-DB
Q: How to service and repair the thermostat in a 3.9L engine on Lincoln LS?
A: To fix the thermostat of a 3.9L engine, remove the engine cover, air cleaner tube, drain the cooling system and proceed with a removal sequence according to order as shown in the illustrations. Install parts, fill and bleed the cooling system. Installation Use an 18 mm wrench to fix the thermostat, and make sure it is placed correctly.
Thermostat
2W9Z-8575-AB
Q: How to service the thermostat for the 3.9L engine on Lincoln LS?
A: To maintain the 3.9L engine thermostat, empty the cooling system and dismount the housing. Loosen/ unlock and take out the thermostat and its parts using an 18 mm wrench. Install the new thermostat and make sure it is aligned straight and fixed. Install the housing again and refuel the cooling system.