How to service the heater core and evaporator core housing on 2003 Mercury Mountaineer?

Service of heater core and evaporator core housing starts with checking the evaporator core under vacuum to detect leaks before extracting the component. An accumulator replacement should only be performed when contamination exists from a defective A/C compressor or the accumulator displays signs of damage. Choosing to disconnect any A/C fittings requires new O-ring seals that need PAG oil lubrication before reconnection while hose lubrication should use plain water as necessary. First recover all refrigerants and then disconnect the instrument panel. The specified components should be taken off starting from this step. Users can start by detaching vacuum line connectors in the engine bay before removing the grommet to push the vacuum tubing into the passenger area. Finish the installation by running the opposite sequence of the removal steps.

OEM 2003 Mercury Mountaineer Heater Core

HVAC Heater Core

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2 Heater Cores found

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2003 Mercury Mountaineer Heater Core, Rear
Part Number: H2MZ-18476-X
Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core, Rear; HVAC Heater Core
- Position: Rear
- Replaces: 1L2Z-18476-CA, HC-32, HC-25, F85Z-18476-AA, HC-22
- Item Weight: 1.90 Pounds
- Item Dimensions: 9.3 x 2.9 x 12.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: H2MZ-18476-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Mercury Mountaineer Submodels:
- Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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2003 Mercury Mountaineer 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
- Item Weight: 3.60 Pounds
- Item Dimensions: 8.2 x 21.1 x 13.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: H2MZ-18476-Y
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Mercury Mountaineer Submodels:
- Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS

2003 Mercury Mountaineer Heater Core

If you're seeking quality and affordability, look no further than our extensive inventory of genuine 2003 Mercury Mountaineer Heater Core available at FordPartsDeal.com. You can confidently purchase our OEM 2003 Mercury Mountaineer Heater Core as they are supported by the manufacturer's warranty and our hassle-free return policy, alongside the benefit of our fast delivery service.

2003 Mercury Mountaineer Heater Core Parts Questions & Experts Answers

Q: How to service the heater core and evaporator core housing on 2003 Mercury Mountaineer?
A: Service of heater core and evaporator core housing starts with checking the evaporator core under vacuum to detect leaks before extracting the component. An accumulator replacement should only be performed when contamination exists from a defective A/C compressor or the accumulator displays signs of damage. Choosing to disconnect any A/C fittings requires new O-ring seals that need PAG oil lubrication before reconnection while hose lubrication should use plain water as necessary. First recover all refrigerants and then disconnect the instrument panel. The specified components should be taken off starting from this step. Users can start by detaching vacuum line connectors in the engine bay before removing the grommet to push the vacuum tubing into the passenger area. Finish the installation by running the opposite sequence of the removal steps.