Four Seasons 92408 HVAC Heater Core

Four Seasons 92408 Heater Core for Mazda RX-8

The Four Seasons 92408 heater core is an aluminum HVAC heater core built for direct replacement service in select Mazda RX-8 models. It is engineered to meet or exceed OEM requirements and is sized for the factory heater core location.

Key Features

• Aluminum heater core construction for HVAC heat transfer
• Measures 3-3/4 in. high, 11-1/16 in. wide, and 13/16 in. deep
• Tube openings measure 0.5625 in. (14.2875 mm) on both connections
• Meets or exceeds OEM specifications
• Direct-fit style for 2004-2011 Mazda RX-8 heater core service
• Four Seasons Heater Core line for HVAC replacement applications

Detailed Description

Four Seasons 92408 is an aluminum heater core designed for the HVAC system in 2004-2011 Mazda RX-8 models. The core dimensions, tube sizing, and fixed pipe positioning support a factory-style replacement for the original heater core assembly. This part cross-references Dorman - HELP 92408 for the same application.

As part of the Four Seasons Heater Core product line, this unit is built for vehicles that need a replacement heater core with OEM-level fit and function. It is a practical choice for Mazda RX-8 heater core replacement when the original unit is leaking, restricted, or no longer transferring heat properly.

What It Helps Address

• Loss of cabin heat in the Mazda RX-8
• Coolant odor or moisture from a leaking heater core
• Restricted coolant flow through the HVAC heater circuit
• Uneven or weak defrost performance caused by poor heater output
• HVAC heating issues tied to a damaged or corroded core

Installation Notes and Tips

Compatible with 2004-2011 Mazda RX-8, heater core position. Verify tube size, core dimensions, and pipe orientation against the removed part before installation. Inspect hoses, clamps, and surrounding HVAC components during service to help prevent repeat repairs. Because adjustable pipe positioning is not provided, confirm alignment with the factory routing before final assembly.

Quality Assurance

Four Seasons 92408 is listed as meeting or exceeding OEM requirements for the specified application. It is built as an aluminum heater core for replacement use in Mazda RX-8 HVAC systems.