How to Service and Repair an Auxiliary Heater Core on Lincoln Navigator?

In the case of the Expedition and Navigator, one requires a pressure leak test in order to service the auxiliary heater core. Take out auxiliary heater core, evaporator core housing, the floorpan bracket, heater core tube bracket and access cover screws. Lastly, take the heater core out and do the steps in the reverse order.

How to service and repair the heater core on Lincoln Navigator?

To remove the core of the heater, disconnect the battery, empty the radiator and remove the instrument panel and junction block splash shield. Unscrew the disconnect cables, hoses, and brackets and take out the plenum chamber top and blend door assembly and then take out the heater core. Installation Reverse these steps.

OEM Lincoln Navigator Heater Core

HVAC Heater Core

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16 Heater Cores found

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Lincoln Navigator Heater Core, Front Part Number: H2MZ-18476-C
$91.26 MSRP: $144.91
You Save: $53.65 (38%)
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Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core, Front; HVAC Heater Core
- Manufacturer Note: High Level Aftermarket Spec / Non Warranty Repairs
- Position: Front
- Replaces: F65Z-18476-AA, HC-78, 1L7Z-18476-AA, HC-15
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2001 Lincoln Navigator | Base | 8 Cyl 5.4 L GAS
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Lincoln Navigator Heater Core, Rear Part Number: 7L1Z-18476-B
$154.58 MSRP: $245.45
You Save: $90.87 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Assembly - Heater; HVAC Heater Core, Rear; HVAC Heater Core
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2017 Lincoln Navigator | Base, Luxury, Reserve, Select, Ultimate | 6 Cyl 3.5 L GAS, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
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Lincoln Navigator Case Assembly, Front Part Number: NL3Z-19850-E
$350.72 MSRP: $515.00
You Save: $164.28 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Evaporator Assembly; HVAC Unit Case Assembly, Front; A/C & Heater Assembly
- Position: Front
- Replaces: NL3Z-19850-B, ML3Z-19850-D
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2022-2024 Lincoln Navigator | Base, Black Label, L Base, L Black Label, L Livery, L Reserve, Reserve | 6 Cyl 3.5 L GAS
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Lincoln Navigator A/C & Heater Assembly Part Number: JL1Z-19850-AK
$554.40 MSRP: $821.33
You Save: $266.93 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater Assembly; HVAC Unit Case Assembly
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2024 Lincoln Navigator | Base, Black Label, L Base, L Black Label, L Livery, L Reserve, Reserve | 6 Cyl 3.5 L GAS
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Lincoln Navigator A/C & Heater Assembly, Rear Part Number: JL1Z-19850-AJ
$534.36 MSRP: $784.67
You Save: $250.31 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater Assembly; HVAC Unit Case Assembly, Rear
- Position: Rear
- Replaces: JL1Z-19850-AG
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2021 Lincoln Navigator | Base, Black Label, L Black Label, L Livery, L Reserve, L Select, Premiere, Reserve, Select | 6 Cyl 3.5 L GAS
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Lincoln Navigator Heater Core, Rear Part Number: 7L1Z-18476-C
$125.57 MSRP: $199.40
You Save: $73.83 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Assembly - Heater; HVAC Heater Core, Rear; HVAC Heater Core
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2017 Lincoln Navigator | L, L Luxury, L Reserve, L Select, L Ultimate | 6 Cyl 3.5 L GAS, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
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Lincoln Navigator Heater Core, Front Part Number: FL3Z-18476-B
$103.21 MSRP: $169.82
You Save: $66.61 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Radiator And Seal Assembly - Heater; HVAC Heater Core, Front; HVAC Heater Core
- Position: Front
- Replaces: HC-70, FL3Z-18476-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2024 Lincoln Navigator | Base, Black Label, L Base, L Black Label, L Livery, L Reserve, L Select, Premiere, Reserve, Select | 6 Cyl 3.5 L GAS
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Lincoln Navigator Heater Core, Front Part Number: BL3Z-18476-A
$154.70 MSRP: $254.55
You Save: $99.85 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Assembly - Heater; HVAC Heater Core, Front; HVAC Heater Core
- Manufacturer Note: Includes Seal
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2017 Lincoln Navigator | Base, L, L Reserve, L Select, Reserve, Select | 6 Cyl 3.5 L GAS, 8 Cyl 5.4 L FLEX
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Lincoln Navigator Air Inlet Duct Part Number: HL3Z-19A618-AC
$55.34 MSRP: $85.00
You Save: $29.66 (35%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Duct - Air; HVAC Air Inlet Housing; Cabin Air Intake Duct; Case Assembly; Center Duct
- Replaced by: HL3Z-19A618-AD
- Replaces: HL3Z-19A618-AA, HL3Z-19A618-AB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2024 Lincoln Navigator | Base, Black Label, L Base, L Black Label, L Livery, L Reserve, L Select, Premiere, Reserve, Select | 6 Cyl 3.5 L GAS
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Lincoln Navigator Heater Core, Rear Part Number: ML1Z-18476-A
$75.57 MSRP: $120.00
You Save: $44.43 (38%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Radiator And Seal Assembly - Heater; HVAC Heater Core, Rear
- Position: Rear
- Replaces: HC-80, JL1Z-18476-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2024 Lincoln Navigator | Base, Black Label, L Base, L Black Label, L Livery, L Reserve, L Select, Premiere, Reserve, Select | 6 Cyl 3.5 L GAS
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Lincoln Navigator Evaporator Core Part Number: HL3Z-19850-GK
$649.69 MSRP: $1050.00
You Save: $400.31 (39%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Evaporator Assembly; Case Assembly; A/C & Heater Assembly
- Replaces: HL3Z-19850-G, HL3Z-19850-GG, HL3Z-19850-Y, HL3Z-19850-L, HL3Z-19850-GF, HL3Z-19850-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2021 Lincoln Navigator | Base, Black Label, L Black Label, L Livery, L Reserve, L Select, Premiere, Reserve, Select | 6 Cyl 3.5 L GAS
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Lincoln Navigator Heater Core, Rear Part Number: F75Z-18476-AA
Product Specifications
- Other Name: Radiator And Seal Assembly; HVAC Heater Core, Rear; Core Assembly - Heater; HVAC Heater Core
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998 Lincoln Navigator | Base | 8 Cyl 5.4 L GAS
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Lincoln Navigator 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:
- 1999-2002 Lincoln Navigator | Base | 8 Cyl 5.4 L GAS
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Lincoln Navigator Heater Core, Front Part Number: H2MZ-18476-P
$86.91 MSRP: $138.00
You Save: $51.09 (38%)
Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core, Front; HVAC Heater Core
- Position: Front
- Replaces: 2L1Z-18476-AA, 2L1Z-18476-BA, HC-33
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2006 Lincoln Navigator | Base, Luxury, Ultimate | 8 Cyl 5.4 L GAS
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Lincoln Navigator Heater Core, Front Part Number: H2MZ-18476-AA
$98.01 MSRP: $155.64
You Save: $57.63 (38%)
Product Specifications
- Other Name: Heater Assembly - Less Radiator; HVAC Heater Core, Front; HVAC Heater Core
- Position: Front
- Replaces: HC-51, HC-44, 7L1Z-18476-A, 9L3Z-18476-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Lincoln Navigator | Base, L, L Luxury, L Ultimate, Luxury, Ultimate | 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
View related parts
Lincoln Navigator Heater Core, Rear Part Number: 2L1Z-18476-CA
Product Specifications
- Other Name: Core Assembly - Heater; HVAC Heater Core, Rear
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2006 Lincoln Navigator | Base, Luxury, Ultimate | 8 Cyl 5.4 L GAS

Lincoln Navigator Heater Core

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Lincoln Navigator Heater Core Parts and Q&A

Heater Core, Rear
7L1Z-18476-B
Q: How to Service and Repair an Auxiliary Heater Core on Lincoln Navigator?
A: In the case of the Expedition and Navigator, one requires a pressure leak test in order to service the auxiliary heater core. Take out auxiliary heater core, evaporator core housing, the floorpan bracket, heater core tube bracket and access cover screws. Lastly, take the heater core out and do the steps in the reverse order.
Heater Core, Front
H2MZ-18476-C
Q: How to service and repair the heater core on Lincoln Navigator?
A: To remove the core of the heater, disconnect the battery, empty the Radiator and remove the instrument panel and junction block splash shield. Unscrew the disconnect cables, hoses, and brackets and take out the plenum chamber top and blend door assembly and then take out the heater core. Installation Reverse these steps.