Four Seasons 90795 HVAC Heater Core

Four Seasons 90795 Heater Core for Mazda Miata

The Four Seasons 90795 heater core is a specific-fit HVAC heater core for 1990-1997 Mazda Miata models. Built with an aluminum core and compact dimensions, it is made for direct replacement service in the heating system.

Four Seasons Heater Core products are part of a long-running HVAC line focused on dependable mobile A/C and heating service parts. This heater core follows that product line approach with application-specific fitment for the Mazda Miata and a design intended for consistent operation over time.

Key Features

• Part number 90795 heater core for Mazda Miata applications
• Specific fit design for 1990-1997 Mazda Miata, heater core position
• Aluminum heater core construction
• Core dimensions: 1 in. depth, 7 in. height, 5.625 in. width
• Tube size: 0.625 in. / 15.88 mm on both connections
• Four Seasons Heater Core product line

Detailed Description

Four Seasons 90795 is an aluminum HVAC heater core engineered for the heating system in 1990-1997 Mazda Miata models. The specific-fit design supports direct replacement service, and the compact core size helps match the original application requirements. If you are replacing a leaking or restricted Mazda Miata heater core, this part number provides a targeted solution for the vehicle’s HVAC system.

This part cross-references Spectra Premium 94795 and APDI 9010008 for the same application. Four Seasons 90795 is also referenced by interchange numbers including 93795, 553795, 8231451, 18118955, NA0161A10, and NA7561A10.

What It Helps Address

• Loss of cabin heat in a 1990-1997 Mazda Miata
• Coolant leakage from a damaged heater core
• Restricted coolant flow through the HVAC heater core
• Uneven or weak heater output from the heating system
• Replacement of a worn aluminum heater core in the Miata HVAC assembly

Installation Notes and Tips

Verify the vehicle year and application before installation. This heater core is listed for 1990-1997 Mazda Miata models with heater core fitment, so confirm the original core dimensions and tube size match the vehicle before removal. Proper cooling system service practices should be followed during replacement, including draining and refilling coolant and checking for leaks after installation.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, backed by more than 50 years of mobile A/C experience. The 90795 heater core is part of that HVAC-focused product line for Mazda Miata heating system service.