How to remove and replace the heater core in an automotive HVAC system on 2010 Mazda 3?

Begin by making the air conditioning system emptied by a technician. Take off battery cover and de-connection of negative terminal. remove cooling system, heater hose and refrigerant pipes, label electrical connectors. Take out an instrument panel and HVAC and remove the heater core. Installation Re-install in the reverse order, making sure the connections are correct.

Genuine 2010 Mazda 3 Heater Core

HVAC Heater Core

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

2 Heater Cores found

View related parts
2010 Mazda 3 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
- Item Weight: 3.20 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: BBM5-61-A10
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 2010 Mazda 3 Submodels:
- i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
View related parts
2010 Mazda 3 Heater Core Part Number: BBS1-61-A10
Product Specifications
- Other Name: Core, Heater Unit
- Item Weight: 3.00 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: BBS1-61-A10
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 2010 Mazda 3 Submodels:
- Mazdaspeed | 4 Cyl 2.3 L GAS

2010 Mazda 3 Heater Core Parts and Q&A

Q: How to remove and replace the heater core in an automotive HVAC system on 2010 Mazda 3?
A: Begin by making the air conditioning system emptied by a technician. Take off battery cover and de-connection of negative terminal. remove cooling system, heater hose and refrigerant pipes, label electrical connectors. Take out an instrument panel and HVAC and remove the heater core. Installation Re-install in the reverse order, making sure the connections are correct.