Four Seasons 98738 HVAC Heater Core

Four Seasons 98738 Heater Core Overview

The Four Seasons 98738 heater core is an aluminum HVAC heater core built for efficient cabin heat transfer and direct replacement service. It is an OE-style heater core that meets or exceeds OEM requirements and is sized for applications that call for a 7-3/4 in. height, 6 in. width, and 2 in. depth.

For drivers searching for a heater core for Ford Mustang or Ford Falcon heating repair, this Four Seasons heater core 98738 provides a straightforward replacement option with aluminum construction and 0.625 in. tube connections.

Key Features

• Brand: Four Seasons Heater Core line
• Part number: 98738
• Aluminum heater core construction
• Meets or exceeds OEM specifications
• Core dimensions: 7.750 in. height, 6.000 in. width, 2.000 in. depth
• Tube size: 0.625 in. / 15.875 mm
• Adjustable pipe positioning: No

Detailed Description

The Four Seasons Heater Core line focuses on replacement HVAC core components for vehicles that need dependable heat exchange performance. Part number 98738 uses an aluminum core material and a compact rectangular layout to match common factory heater box dimensions. If you are replacing a leaking or restricted heater core in a Ford Mustang or Ford Falcon, this unit is built to restore proper coolant flow through the HVAC system and support consistent cabin heat output.

This part cross-references Anchor 9021 and APDI 9010090 for the same application. The Four Seasons 98738 heater core is also listed among interchange references including 2149, 90210, 250528, and 279330.

What It Helps Fix

• Loss of cabin heat from a leaking heater core
• Sweet coolant odor inside the vehicle
• Fogging or film on the windshield caused by coolant vapor
• Restricted coolant flow through the HVAC heater circuit
• Uneven or weak heater performance in the passenger compartment

Installation Notes and Tips

Verify core height, width, depth, and tube diameter before installation. Confirm that the heater hose connections and pipe orientation match the vehicle’s HVAC housing, since adjustable pipe positioning is not provided. For Ford Mustang and Ford Falcon heater core replacement jobs, compare the original core to the Four Seasons 98738 before reassembly to ensure proper fit in the heater case.

Quality Assurance

This heater core is specified as meeting or exceeding OEM requirements, making it a direct-fit replacement choice for HVAC repair work where factory-level dimensions and aluminum construction matter. Use the listed measurements and interchange references to confirm application match before installation.