How to service the thermostat for the 4.6L and 5.4L (2V) engines on 2003 Ford Expedition?

Service of the 4.6L and 5.4L (2V) engines' thermostat starts with draining part of the engine cooling system fluid. You should start by breaking the connection between the upper radiator hose and the water outlet adapter. Begin the procedure by unfastening the upper mounting bracket of the power steering reservoir and disassemble the water outlet adapter bolts before taking out the adapter. Take out the water thermostat while removing its O-ring seal and dispose of the O-ring. The installation should be finished by following the reverse order of the removal procedures.

OEM 2003 Ford Expedition Thermostat

Engine Coolant Thermostat

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2003 Ford Expedition Thermostat
Part Number: 7L3Z-8575-E
$20.68 MSRP: $32.00
You Save: $11.32 (36%)
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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
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 7L3Z-8575-E
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2003 Ford Expedition Submodels:
- Eddie Bauer, EL Eddie Bauer, EL King Ranch, EL Limited, EL XL, EL XLT, Funkmaster Flex Edition, King Ranch, Limited, NBX, XL, XLS, XLT, XLT Sport | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS

2003 Ford Expedition Thermostat

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2003 Ford Expedition Thermostat Parts Questions & Experts Answers

Q: How to service the thermostat for the 4.6L and 5.4L (2V) engines on 2003 Ford Expedition?
A: Service of the 4.6L and 5.4L (2V) engines' thermostat starts with draining part of the engine cooling system fluid. You should start by breaking the connection between the upper radiator hose and the water outlet adapter. Begin the procedure by unfastening the upper mounting bracket of the power steering reservoir and disassemble the water outlet adapter bolts before taking out the adapter. Take out the water thermostat while removing its O-ring seal and dispose of the O-ring. The installation should be finished by following the reverse order of the removal procedures.