Mazda Mazda6 Heater Cores

We found 11 eBay listings for Mazda Mazda6 heater cores, covering model years 2003 to 2021.

11 listings available |10 sellers

Last checked: . Confirm current price and fitment with the seller.

Compare heater cores options for the Mazda Mazda6 by part number, specification and seller fitment details. Matching listing titles mention 2003–2021; this is seller-described coverage, not confirmed fitment. Check the exact generation, engine and required specification before choosing a listing.

What the listings say: Of the 11 listings for Mazda Mazda6 heater cores checked on 4 November 2026, 10 give model years between 2003 and 2021, most often 2014–2021 (3). Titles are the sellers’ descriptions, not confirmed fitment: match the part number, model year, generation and engine before you buy.

11 Results

Heater Cores

Found 11 listings for "mazda mazda6 heater cores"

2016 MAZDA 6 A/C HEATER CORE OEM+

2016 MAZDA 6 A/C HEATER CORE OEM+

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UsedπŸ“ US
Seller: ebluepart
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2014 2015 2016 2017 MAZDA 6 HEATER CORE BOX ASSEMBLY AC HVAC UNIT

2014 2015 2016 2017 MAZDA 6 HEATER CORE BOX ASSEMBLY AC HVAC UNIT

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UsedπŸ“ US
Seller: 402usedparts
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2014-2021 MAZDA 6 A/C AC HVAC AIR CONDITIONING EVAPORATOR HEATER CORE OEM

2014-2021 MAZDA 6 A/C AC HVAC AIR CONDITIONING EVAPORATOR HEATER CORE OEM

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UsedπŸ“ US
Seller: advantage-parts
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HVAC Heater Core for 2014-2018 Mazda 3 Sport 3 2013-25 Mazda CX-5 14-21 Mazda 6

HVAC Heater Core for 2014-2018 Mazda 3 Sport 3 2013-25 Mazda CX-5 14-21 Mazda 6

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NewπŸ“ US
Seller: alpa_store
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2005-2008 Mazda6 3.0L V6 Heater Core Hoses Upper & Lower Set Pair Mazda 6

2005-2008 Mazda6 3.0L V6 Heater Core Hoses Upper & Lower Set Pair Mazda 6

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UsedπŸ“ US
Seller: g18son1
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2016 Mazda 6 Hvac Heater Box Core

2016 Mazda 6 Hvac Heater Box Core

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UsedπŸ“ US
Seller: 402usedparts
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2004 Mazda 6 Mazda6 Sedan HVAC Heater Core / Blend Door Housing Assembly OEM

2004 Mazda 6 Mazda6 Sedan HVAC Heater Core / Blend Door Housing Assembly OEM

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UsedπŸ“ US
Seller: midwesttreasuresco
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New HVAC Heater Core for Mazda 6 2003 2004 2005 2006 2007 2008 L4 2.3L V6 3.0L

New HVAC Heater Core for Mazda 6 2003 2004 2005 2006 2007 2008 L4 2.3L V6 3.0L

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NewπŸ“ US
Seller: autoparts_premium
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HVAC Heater Core for 2014-2018 Mazda 3 2.0L 2.5L 2014-2021 Mazda 6 2.5L W/ Pipes

HVAC Heater Core for 2014-2018 Mazda 3 2.0L 2.5L 2014-2021 Mazda 6 2.5L W/ Pipes

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NewπŸ“ US
Seller: autocoolingparts88
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Heater matrix for Mazda CX5 CX-5 & Mazda 6 Mk3 WON'T BLOCK UP UK 1092

Heater matrix for Mazda CX5 CX-5 & Mazda 6 Mk3 WON'T BLOCK UP UK 1092

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NewπŸ“ GB
Seller: motoradsonline
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2014-2017 MAZDA 6 HEATER CORE BOX ASSEMBLY AC HVAC UNIT

2014-2017 MAZDA 6 HEATER CORE BOX ASSEMBLY AC HVAC UNIT

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UsedπŸ“ US
Seller: vvv.auto.huz
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Questions about these listings

Which model years are named in the listings for Mazda Mazda6 heater cores?

10 listing titles give model years from 2003 to 2021; 2014–2021 appears most often (3 listings). Check your car’s year against the fitment details in each listing.

How do I check fitment before buying Mazda Mazda6 heater cores?

Match the part number on your old part with the listing, then confirm the model year, generation and engine in the seller’s fitment details. Titles are the sellers’ descriptions, not confirmed fitment.

Check compatibility before buying

These listings were found using Mazda Mazda6 heater cores search terms. A search match does not establish fitment. Compare the part number, vehicle year, generation and engine with the seller's compatibility details. Confirm delivery, returns and the final price on eBay before ordering.