Four Seasons 98584A HVAC Heater Core - Front

Four Seasons 98584A Heater Core

The Four Seasons 98584A heater core is an aluminum HVAC replacement built for Ford van applications that need dependable cabin heat. It matches the original-style dimensions and meets or exceeds OEM requirements for a direct-fit repair on select Ford E-Series models.

Four Seasons Heater Core line parts are built for HVAC service work where correct fit, core size, and tube placement matter. This aluminum heater core follows the listed dimensions for a straightforward replacement in compatible Ford E-150, E-250, E-350, and E-100 Econoline applications.

Key Features

• Part number: 98584A
• Aluminum heater core construction
• Core dimensions: 9-1/4 in. length, 6 in. width, 1-7/8 in. thickness
• Core height: 9.250 in.; core width: 6.000 in.; core depth: 1.875 in.
• Tube size: 0.625 in. / 15.875 mm on both connections
• Meets or exceeds OEM specifications
• Fixed pipe positioning; adjustable pipe positioning: No

Detailed Description

Four Seasons 98584A is an aluminum HVAC heater core for Ford E-Series vans and related Econoline models with the listed heater configurations. It is sized for applications including 1990-1991 Ford E-150 Econoline, E-250 Econoline, and E-350 Econoline front heater core service with rear heater equipment, as well as earlier Ford E-Series and E-100 Econoline applications with high output heater setups. This part cross-references Spectra Premium 94584 for the same application.

Use this heater core when replacing a leaking, restricted, or inefficient core in Ford E-150 Econoline, Ford E-250 Econoline, or Ford E-350 Econoline HVAC systems. The aluminum core material supports efficient heat transfer and the listed tube dimensions help confirm fitment before installation.

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 output in Ford Econoline vans

Installation Notes and Tips

• Verify the vehicle’s heater configuration before ordering, especially rear heater and high output heater applications.
• Confirm core dimensions and 0.625 in. tube size against the removed part.
• Inspect hoses, clamps, and coolant condition during heater core replacement.
• Flush the cooling system if contamination or debris is present.
• Bleed air from the cooling system after installation to restore proper heater performance.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements. The part number 98584A is built for direct replacement use in the specified Ford E-Series and Econoline applications, with aluminum construction and application-specific dimensions for accurate service fitment.