How to service the thermostat for the 5.4L and 6.8L engines on Ford Excursion?

The first step to service the 5.4L and 6.8L engine thermostat includes draining part of the cooling system fluid. First disconnect the upper radiator hose before removing the outlet connection by destroying its bolts. You should first discard the O-ring seal before you remove the coolant thermostat and its O-ring seal. The correct process for installing the coolant thermostat in the upper intake manifold includes using a new O-ring seal that must fit properly. Secure the cooling system outlet by attaching it to the upper intake manifold then install its connecting bolts. Reestablish the upper radiator hose before finishing the procedure by filling the cooling system.

OEM Ford Excursion Thermostat

Engine Coolant Thermostat

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4 Thermostats found

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Ford Excursion Thermostat
Part Number: 7L3Z-8575-E
$20.68 MSRP: $32.00
You Save: $11.32 (36%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 7L3Z-8575-D, 7L3Z-8575-B, AL3Z-8575-B, RT-1196, RT-1230, 3L3Z-8575-AA, 3L3Z-8575-AC, 7L3Z-8575-C, AL3Z-8575-A, RT-1204, RT-1234, RT-1178, RT-1229, RT-1165
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2005 Ford Excursion | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 5.4 L GAS
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Ford Excursion Thermostat
Part Number: 7C3Z-8575-B
$12.40 MSRP: $20.00
You Save: $7.60 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Manufacturer Note: THERMOSTAT, WTR
- Replaces: YC2Z-8575-BC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2005 Ford Excursion | Eddie Bauer, Limited, XLS, XLT | 10 Cyl 6.8 L GAS
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Ford Excursion Thermostat
Part Number: F6TZ-8575-EA
$45.11 MSRP: $71.64
You Save: $26.53 (38%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Thermostat Assembly
- Replaces: F6TZ-8575-AA, F6TZ-8575-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2003 Ford Excursion | Eddie Bauer, Limited, XLT | 8 Cyl 7.3 L DIESEL
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Ford Excursion Thermostat Housing
Part Number: 3C3Z-8575-AA
$40.08 MSRP: $63.64
You Save: $23.56 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat; Thermostat Housing Cover; Thermostat
- Manufacturer Note: Themostat and connector asy - #3C34 8575-AA - (Navistar ID 1839304C91) - includes gasket
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2005 Ford Excursion | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 6.0 L DIESEL

Ford Excursion Thermostat

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Ford Excursion Thermostat Parts Questions & Experts Answers

Thermostat Housing
3C3Z-8575-AA
Q: How to service the thermostat for the 5.4L and 6.8L engines on Ford Excursion?
A: The first step to service the 5.4L and 6.8L engine thermostat includes draining part of the cooling system fluid. First disconnect the upper radiator hose before removing the outlet connection by destroying its bolts. You should first discard the O-ring seal before you remove the coolant thermostat and its O-ring seal. The correct process for installing the coolant thermostat in the upper intake manifold includes using a new O-ring seal that must fit properly. Secure the cooling system outlet by attaching it to the upper intake manifold then install its connecting bolts. Reestablish the upper radiator hose before finishing the procedure by filling the cooling system.