Four Seasons 91712 HVAC Heater Core

Four Seasons 91712 Heater Core for Toyota Supra

The Four Seasons 91712 heater core is a copper/brass HVAC replacement for select 1986-1998 Toyota Supra models. It is built to match the original heater core layout and meets or exceeds OEM requirements for direct-fit service.

Key Features

• Brand: Four Seasons Heater Core line
• Part number: 91712
• Core material: Copper
• Style: Copper/brass heater core
• Core dimensions: 7 in. height, 5-5/8 in. width, 2 in. depth
• Tube size: 0.75 in. / 19.05 mm on both connections
• Meets or exceeds OEM specifications
• Compatible with 1986-1998 Toyota Supra heater core applications

Product Details

Four Seasons 91712 is a copper/brass HVAC heater core designed for the Toyota Supra heating system. The copper core material supports efficient heat transfer, while the listed dimensions and 0.75-inch tube connections help ensure proper fitment in the factory heater core location. This part cross-references APDI 9010307 for the same application.

For buyers searching for a Toyota Supra heater core, Four Seasons 91712 provides a direct replacement option for 1986-1998 Toyota Supra models. The part number 91712 is also referenced across multiple aftermarket catalogs, making it easier to verify the correct HVAC heater core before ordering.

Common Issues This Part May Resolve

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Coolant leakage from the heater core area
• Fogging caused by heater core seepage
• Restricted heat output from a clogged core

Installation Notes and Tips

Confirm the heater core dimensions and tube orientation against the original unit before installation. Drain the cooling system, inspect hoses and clamps, and flush the HVAC coolant circuit if contamination or scale is present. After installation, refill and bleed the cooling system carefully to remove trapped air and verify proper heater performance.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements, supporting a replacement standard aligned with original equipment specifications for Toyota Supra HVAC service.