/live/media/FS/FS_92123_Ang.jpg)
Will it fit your vehicle?
Confirm before you buy. Free return shipping if it doesn't fit.
Four Seasons 92123 HVAC Heater Core
| Brand | Four Seasons 92123 |
|---|---|
| Length | 7-7/8 |
| Thickness | 1 |
| Width | 7-1/8 |
| Core Material | Aluminum |
| Universal Or Specific Fit | Oem specific |
| Gasket Or Seal Included | Not included |
| Adjustable Pipe Positioning | No |
| Core Depth IN | 1.000 |
| Core Height IN | 7.875 |
| Core Width IN | 7.125 |
| Description | Heater cores |
| Meets / Exceeds OEM? | Yes |
| Style | Aluminum heater core |
| Tube 1 IN | 0.625 |
| Tube 1 MM | 15.875 |
| Tube 2 IN | 0.625 |
| Tube 2 MM | 15.875 |
| Type | Heater core /aluminum |
| Product line | Heater Core |
| Fits | Mazda · 15 vehicles |
OEM-specific fit. Built to match the original heater core application.
Aluminum construction. Lightweight core material helps support efficient heat transfer.
Meets OEM standards. Engineered to meet or exceed original equipment requirements.
Cross-references Dorman - HELP 91123, Edelmann 92123 and KYB 551123 for the same application. See all 8.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Four Seasons 92123 Heater Core Overview
Four Seasons 92123 is an OEM-specific aluminum heater core for select Mazda applications. It is built to match the original heater core layout and dimensions for a direct replacement in the HVAC system.
Compatible with 2007-2010 Mazda 3, 2009 Mazda 3 Sport, and 2009-2017 Mazda 5 heater core applications, this part number 92123 is sized for accurate fitment and dependable heat transfer.
Key Features
- Brand: Four Seasons Heater Core line
- Part number: 92123
- Aluminum core construction
- OEM specific fit for matched vehicle applications
- Core dimensions: 7-7/8 in. length, 7-1/8 in. width, 1 in. thickness
- Tube size: 0.625 in. / 15.875 mm on both connections
- Meets or exceeds OEM requirements
- Gasket or seal not included
Product Details
The Four Seasons heater core 92123 is part of the Heater Core product line and is engineered as an aluminum heater core replacement for the factory HVAC housing. Its OEM-specific design helps maintain the original fit and connection layout, while the aluminum core material supports efficient cabin heat exchange. This part cross-references Dorman - HELP 91123 for the same application.
Common Replacement Reasons
- Weak or inconsistent cabin heat
- Coolant odor inside the vehicle
- Moisture or fogging from a leaking heater core
- Restricted coolant flow through the HVAC core
- Corrosion or internal blockage in the original heater core
Installation Notes
Verify vehicle fitment by year, model, and build details before installation. Fits 2007 Mazda 3, N/A, from 6/22/07; fits 2008-2009 Mazda 3, N/A, w/o Cold Spec; fits 2009 Mazda 3 Sport, N/A, w/o Cold Spec; fits 2009-2010 Mazda 5, N/A; and fits 2012-2017 Mazda 5, N/A. Transfer or source any required sealing components separately, since the gasket or seal is not included. Confirm tube alignment and HVAC case condition before reassembly.
Quality Assurance
Four Seasons lists this heater core as meeting or exceeding OEM specifications, making it a direct-fit replacement choice for Mazda 3 and Mazda 5 heater core service.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2017 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2016 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2015 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2014 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2013 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2012 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2010 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2009 | Mazda | 3 | — | — | — | N/A | w/o Cold Spec; Heater Core |
| 2009 | Mazda | 3 Sport | — | — | — | N/A | w/o Cold Spec; Heater Core |
| 2009 | Mazda | 5 | — | — | — | N/A | Heater Core |
| 2008 | Mazda | 3 | — | — | — | N/A | w/o Cold Spec; Heater Core |
| 2007 | Mazda | 3 | — | 2.0L | L4 | N/A | w/o Cold Spec; From 6/22/07; Heater Core |
| 2007 | Mazda | 3 | — | 2.3L | L4 | N/A | w/o Cold Spec; From 6/22/07; Heater Core |
| 2007 | Mazda | 3 | S | 2.3L | L4 | N/A | w/o Cold Spec; From 6/22/07; Heater Core |
| 2007 | Mazda | 3 | i | 2.0L | L4 | N/A | w/o Cold Spec; From 6/22/07; Heater Core |
| No rows match your filter. | |||||||