How to remove and replace the heater core in an automotive HVAC system on Mazda 3?

Begin by having the air conditioning system discharged by an automotive air conditioning technician. Next, remove the battery cover and disconnect the cable from the negative battery terminal. Drain the cooling system, then disconnect the heater hoses from the heater core inlet and outlet pipes at the firewall, along with the two refrigerant pipes. Tag and disconnect the cables and electrical connectors from the HVAC unit, and remove the mounting fasteners from the firewall side of the engine compartment. Remove the instrument panel and HVAC unit as an assembly, and take off the lower cowl grille panel to access some HVAC unit fasteners. Remove the HVAC unit-to-instrument panel mounting fasteners and separate the unit from the instrument panel. The heater core is located in the front lower center section of the HVAC unit, below the blower motor housing; remove the heater core cover screws and pull the heater core out of the housing. Installation is the reverse of removal, ensuring to reconnect the heater core inlet and outlet hoses at the firewall. Finally, refill the cooling system and have the system evacuated, recharged, and leak-tested by the shop that discharged it.

How to remove and install the heater core on Mazda B2200?

Installation and removal of heater in a pickup To install or remove the heater in a pickup, the first step would be to take out the heater out of the truck and then remove the five screws that are located between the halves of the case. Unscrew the hose clamps and pull the hose core out and then insert the replacement core and attach the core tube to the water valve tube using a short hose and clamps. Reassemble the halves of the case and reconnect with the screws and replace the heater and ensure that it is operating properly. To access the front of an MPV, empty the engine cooling system, disassemble the instrument panel, disconnect the heater hoses, unbolt the instrument panel support, support the heater case and unscrew the mounting nut. Lift the case carefully, being careful not to spill the coolant in the core, and then lift out the heater core. Installation is done in the reverse, at which time the new sealer is used and the cooling system is refilled, and leakages are checked. To remove the rear, loosen battery ground, switch the rear heater temperature controller to warm, empty the engine coolant, disassemble the driver seat, disconnect the heater hoses and the wiring, and loosen the mounting bolts of the heater case in order to lift it out. Removing the core is as simple as separating the halves of the cases and install is likewise as simple, replacing any damaged sealer. Navajo Disconnection of the negative battery cable should be done as the engine cools down and coolant should be emptied but it should be in a sealable container. Unscrew the heater hoses in the core tubes and plug them in, disassemble the screws holding the heater core access cover to the plenum assembly and detach the cover. To take out the heater core pull it out of the back and downwards then insert the new core and seal in the plenum, reconnect the access cover and replace the hoses without over-tightening. Lastly, verify the amount of coolant in the system, release the negative battery cable, boot the engine, and check whether it has leakages.

Genuine Mazda Heater Core

HVAC Heater Core

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54 Heater Cores found

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Mazda Heater Core Part Number: DN4K-61-J24
$663.88 MSRP: $907.11
You Save: $243.23 (27%)
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Product Specifications
- Other Name: Cabin-Condenser; Heater Core
Fits the following Mazda Models:
- MX-30 EV | 2022-2023 | Base, Premium Plus | BATTERY EV (EV/BEV)
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Mazda Heater Core Part Number: TK48-61-A10
$728.91 MSRP: $995.99
You Save: $267.08 (27%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- CX-9 | 2016-2023 | Carbon Edition, Grand Touring, Signature, Sport, Touring, Touring Plus | 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: TD11-61-A08
$813.94 MSRP: $1112.15
You Save: $298.21 (27%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- CX-9 | 2007-2015 | Grand Touring, Sport, Touring | 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L GAS
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Mazda Heater Core Part Number: VA54-61-A10
$56.98 MSRP: $75.99
You Save: $19.01 (26%)
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Product Specifications
- Other Name: Core, Heater Unit; Heater Core
Fits the following Mazda Models:
- CX-50 | 2023-2024 | 2.5 S, 2.5 Turbo | 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: NA1P-61-A10
$110.90 MSRP: $147.89
You Save: $36.99 (26%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- MX-5 Miata | 2016-2023 | 100th Anniversary Special Edition, Club, Grand Touring, RF 100th Anniversary Special Edition, RF Club, RF Grand Touring, Sport | 4 Cyl 2.0 L GAS
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Mazda Heater Core Part Number: BFWM-61-A10
$107.60 MSRP: $143.50
You Save: $35.90 (26%)
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Product Specifications
- Other Name: Core, Heater Unit; Heater Core
Fits the following Mazda Models:
- 3 | 2022-2024 | 2.5 Carbon Turbo, 2.5 Turbo, 2.5 Turbo Premium Plus | 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: DEKK-61-A10
$139.71 MSRP: $186.32
You Save: $46.61 (26%)
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Product Specifications
- Other Name: Core, Heater Unit; Heater Core
Fits the following Mazda Models:
- CX-30 | 2021-2023 | 2.5 Turbo | 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: BDTS-61-A10
$179.43 MSRP: $239.28
You Save: $59.85 (26%)
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Product Specifications
- Other Name: Core, Heater Unit; Heater Core
Fits the following Mazda Models:
- 3 | 2019-2024 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
- CX-30 | 2020-2023 | 2.5 S, 2.5 S Carbon Edition, Base, Preferred, Premium, Select | 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: GS3L-61-A10
$217.33 MSRP: $289.82
You Save: $72.49 (26%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- 6 | 2009-2013 | i, S | 4 Cyl 2.5 L GAS, 6 Cyl 3.7 L GAS
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Mazda Heater Core Part Number: DD2F-61-A10
$240.45 MSRP: $320.67
You Save: $80.22 (26%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- CX-3 | 2016-2021 | Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS
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Mazda Heater Core Part Number: NE51-61-A10
$254.85 MSRP: $339.88
You Save: $85.03 (26%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- MX-5 Miata | 2006-2015 | 25th Anniversary Edition, Base, Club, Club Spec, Grand Touring, Special Edition, Sport, SV, Touring | 4 Cyl 2.0 L GAS
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Mazda Heater Core Part Number: DF71-61-A10
$248.73 MSRP: $331.70
You Save: $82.97 (26%)
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- 2 | 2011-2014 | Sport, Touring | 4 Cyl 1.5 L GAS
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Mazda Core Part Number: B25D-61-A10
$259.29 MSRP: $345.79
You Save: $86.50 (26%)
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Product Specifications
- Other Name: Core, Heater Unit; Core
Fits the following Mazda Models:
- Protege | 1999-2000 | DX, ES, LX | 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L GAS
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Mazda Heater Core Part Number: BJS7-61-A10A
$277.00 MSRP: $369.40
You Save: $92.40 (26%)
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Product Specifications
- Other Name: Core, Heater Unit
- Replaces: BJS7-61-A10
Fits the following Mazda Models:
- 3 | 2014-2018 | Grand Touring, i Grand Touring, I Sport, i SV, I Touring, s Grand Touring, s Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: BP4K-61-A10
$294.11 MSRP: $392.23
You Save: $98.12 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- 3 | 2004-2008 | i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
- 5 | 2006 | Sport, Touring | 4 Cyl 2.3 L GAS
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Mazda Heater Core Part Number: BBM4-61-A10
$335.11 MSRP: $446.90
You Save: $111.79 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- 3 | 2012-2013 | i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: BDGF-61-A10
$359.55 MSRP: $479.50
You Save: $119.95 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core, Heater Unit; Heater Core
Fits the following Mazda Models:
- 3 | 2019-2024 | 2.0, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: BBM5-61-A10
$397.49 MSRP: $534.37
You Save: $136.88 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Core, Heater Unit
Fits the following Mazda Models:
- 3 | 2010-2013 | i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: TK48-61-D10
$402.86 MSRP: $541.58
You Save: $138.72 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core, Heater Unit-Rear
Fits the following Mazda Models:
- CX-9 | 2016-2023 | Carbon Edition, Grand Touring, Signature, Sport, Touring, Touring Plus | 4 Cyl 2.5 L GAS
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Mazda Heater Core Part Number: TD11-61-D10A
Product Specifications
- Other Name: Core, Heater Unit-Rear
Fits the following Mazda Models:
- CX-9 | 2007-2015 | Grand Touring, Sport, Touring | 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L GAS

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1-20 of 54 Results

Mazda Heater Core

Your engine generates a lot of heat, which must be expelled. To this end, an arrangement was made in such a way that the air passes through the Mazda heater core, thus warming the passenger compartment. This eliminates the need for electric or gas-fired heaters. However, as your car gets older, corrosion and leaks affect the heater core similarly to how they affect the vehicle's radiator. If you have been changing your antifreeze every two years, you may prevent any crud buildup in the heater core. Nonetheless, when the heater core starts leaking, it can cause interior damage, mold smells, and rust deposits. Leaking within the heater core will result in antifreeze and water inside your car. It is necessary for you to constantly inspect, repair, or replace their heater cores.

Whenever you need replacements, opt for genuine Mazda Heater Cores. Because they meet the manufacturer's criteria, it guarantees that replacements fit perfectly. Thus, these make better choices for people who care about driving. Why should you shop at MazdaPartsNow.com? We sell genuine Mazda Heater Cores. In our online catalog, there is a wide range of different parts. These are delivered directly from authorized Mazda dealers only so that customers can be sure of their security throughout any transaction while using our website. Furthermore, you can also quickly search for OEM parts you want because of our user-friendly site navigation. Choose us for a genuine Mazda Heater Core that keeps your car running like new.

Mazda Heater Core Parts and Q&A

Heater Core
BP8P-61-A10
Q: How to remove and replace the heater core in an automotive HVAC system on Mazda 3?
A:
Begin by having the air conditioning system discharged by an automotive air conditioning technician. Next, remove the battery cover and disconnect the cable from the negative battery terminal. Drain the cooling system, then disconnect the heater hoses from the heater core inlet and outlet pipes at the firewall, along with the two refrigerant pipes. Tag and disconnect the cables and electrical connectors from the HVAC unit, and remove the mounting fasteners from the firewall side of the engine compartment. Remove the instrument panel and HVAC unit as an assembly, and take off the lower cowl grille panel to access some HVAC unit fasteners. Remove the HVAC unit-to-instrument panel mounting fasteners and separate the unit from the instrument panel. The heater core is located in the front lower center section of the HVAC unit, below the blower motor housing; remove the heater core cover screws and pull the heater core out of the housing. Installation is the reverse of removal, ensuring to reconnect the heater core inlet and outlet hoses at the firewall. Finally, refill the cooling system and have the system evacuated, recharged, and leak-tested by the shop that discharged it.
Core
UB39-61-A10
Q: How to remove and install the heater core on Mazda B2200?
A:
Installation and removal of heater in a pickup To install or remove the heater in a pickup, the first step would be to take out the heater out of the truck and then remove the five screws that are located between the halves of the case. Unscrew the hose clamps and pull the hose core out and then insert the replacement core and attach the core tube to the water valve tube using a short hose and clamps. Reassemble the halves of the case and reconnect with the screws and replace the heater and ensure that it is operating properly. To access the front of an MPV, empty the engine cooling system, disassemble the instrument panel, disconnect the heater hoses, unbolt the instrument panel support, support the heater case and unscrew the mounting nut. Lift the case carefully, being careful not to spill the coolant in the core, and then lift out the heater core. Installation is done in the reverse, at which time the new sealer is used and the cooling system is refilled, and leakages are checked. To remove the rear, loosen battery ground, switch the rear heater temperature controller to warm, empty the engine coolant, disassemble the driver seat, disconnect the heater hoses and the wiring, and loosen the mounting bolts of the heater case in order to lift it out. Removing the core is as simple as separating the halves of the cases and install is likewise as simple, replacing any damaged sealer. Navajo Disconnection of the negative battery cable should be done as the engine cools down and coolant should be emptied but it should be in a sealable container. Unscrew the heater hoses in the core tubes and plug them in, disassemble the screws holding the heater core access cover to the plenum assembly and detach the cover. To take out the heater core pull it out of the back and downwards then insert the new core and seal in the plenum, reconnect the access cover and replace the hoses without over-tightening. Lastly, verify the amount of coolant in the system, release the negative battery cable, boot the engine, and check whether it has leakages.