How should a heater core leak be tested and how to remove and install on Ford Explorer Sport Trac?

To check the heater core leak, warm up the vehicle by taking away the A/C evaporator housing and instrument panel. Take away the PCM and its heat sink and then the four nuts on the dash panel. Removed the heater core cover, unscrewed and changed the core and attached a new foam seal back in the reverse order.

How should a heater core be leak tested and removed on Ford Explorer Sport Trac?

In order to check the presence of a leak in the heater core, the vehicle should be ready by removing the instrument panel and the A/C evaporator housing. Take out the PCM and its heat sink, and the four nuts on the dash panel. Remover heater core cover and core, and fit new foam seal and then the vice versa.

OEM Ford Explorer Sport Trac Heater Core

HVAC Heater Core

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Ford Explorer Sport Trac Heater Core Part Number: H2MZ-18476-AC
$77.29 MSRP: $122.73
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Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core; Core
- Replaces: F5TZ-18476-A, HC-14
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2005 Ford Explorer Sport Trac | Adrenalin, Base, XL, XLS, XLT | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Ford Explorer Sport Trac Heater Core, Front Part Number: H2MZ-18476-Y
Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core, Front; HVAC Heater Core
- Position: Front
- Replaces: 7L2Z-18476-A, HC-41, 5L2Z-18476-AA, 6L2Z-18476-A, HC-47
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Ford Explorer Sport Trac | Limited, XLT | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Ford Explorer Sport Trac Heater Assembly Part Number: 9L5Z-18471-B
Product Specifications
- Other Name: Duct - Air Vent; HVAC Heater Core Case Assembly; Heater Core Case; HVAC Unit Case; Heater Core; Housing Assembly; Case Assembly; Heater Case
- Replaces: 7L5Z-18471-A, 8L5Z-18471-A, 9L5Z-18471-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2005 Ford Explorer Sport Trac | Adrenalin, Base, XL, XLS, XLT | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS

Ford Explorer Sport Trac Heater Core

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Ford Explorer Sport Trac Heater Core Parts and Q&A

Heater Core
H2MZ-18476-AC
Q: How should a heater core leak be tested and how to remove and install on Ford Explorer Sport Trac?
A: To check the heater core leak, warm up the vehicle by taking away the A/C evaporator housing and instrument panel. Take away the PCM and its heat sink and then the four nuts on the dash panel. Removed the heater core cover, unscrewed and changed the core and attached a new foam seal back in the reverse order.
Heater Assembly
9L5Z-18471-B
Q: How should a heater core be leak tested and removed on Ford Explorer Sport Trac?
A: In order to check the presence of a leak in the heater core, the vehicle should be ready by removing the instrument panel and the A/C evaporator housing. Take out the PCM and its heat sink, and the four nuts on the dash panel. Remover heater core cover and core, and fit new foam seal and then the vice versa.