How to service the auxiliary heater core on Lincoln Aviator?

In order to service the auxiliary heater core position the vehicle on a hoist in neutral. Clamp the underbody heater hose and loosen the parts sequentially, remembering the location of the screw and line bracket. Installing is a reverse process, so, fill the cooling system and carry out fill and bleed processes to avoid engine damage.

How should a heater core leak be tested and how to remova and install on Lincoln Aviator?

Suspect a heater core leak? Pressure test it before removal. Start by taking out the heater core and evaporator core housing, following the sequence in the provided illustration and table. To install a new heater core, simply reverse the removal steps.

OEM Lincoln Aviator Heater Core

HVAC Heater Core

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8 Heater Cores found

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Lincoln Aviator A/C & Heater Assembly Part Number: L1MZ-19D597-CB
$169.88 MSRP: $262.17
You Save: $92.29 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Evaporator And Housing Assembly; HVAC Heater Core Case Assembly; Housing
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Lincoln Aviator | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Aviator Case Assembly Part Number: L1MZ-19A618-B
$193.96 MSRP: $282.33
You Save: $88.37 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Duct - Air; Inlet Duct
- Replaces: L1MZ-19A618-AC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Lincoln Aviator | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Aviator Evaporator Case Part Number: L1MZ-19930-A
$178.85 MSRP: $260.33
You Save: $81.48 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Housing; A/C Evaporator; Case Assembly
- Replaces: L1MZ-19930-AE
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Lincoln Aviator | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Aviator Case Assembly Part Number: L1MZ-18471-CD
$217.24 MSRP: $319.00
You Save: $101.76 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Duct - Air Vent; Plenum
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Lincoln Aviator | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Aviator Heater Core, Rear Part Number: L1MZ-18476-CB
$71.48 MSRP: $120.00
You Save: $48.52 (41%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Radiator And Seal Assembly - Heater; HVAC Heater Core, Rear
- Position: Rear
- Replaces: L1MZ-18476-CA, HC-91
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Lincoln Aviator | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Aviator Heater Core Part Number: L1MZ-18476-AA
$71.48 MSRP: $120.00
You Save: $48.52 (41%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Radiator And Seal Assembly - Heater
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Lincoln Aviator | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Aviator 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:
- 2003-2005 Lincoln Aviator | Base | 8 Cyl 4.6 L GAS
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Lincoln Aviator 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
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2005 Lincoln Aviator | Base | 8 Cyl 4.6 L GAS

Lincoln Aviator Heater Core

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Lincoln Aviator Heater Core Parts and Q&A

Heater Core, Front
H2MZ-18476-Y
Q: How to service the auxiliary heater core on Lincoln Aviator?
A: In order to service the auxiliary heater core position the vehicle on a hoist in neutral. Clamp the underbody heater hose and loosen the parts sequentially, remembering the location of the screw and line bracket. Installing is a reverse process, so, fill the cooling system and carry out fill and bleed processes to avoid engine damage.
Heater Core, Rear
H2MZ-18476-X
Q: How should a heater core leak be tested and how to remova and install on Lincoln Aviator?
A: Suspect a heater core leak? Pressure test it before removal. Start by taking out the heater core and evaporator core housing, following the sequence in the provided illustration and table. To install a new heater core, simply reverse the removal steps.