Four Seasons 98594A HVAC Heater Core

Heater Core for Ford E-100 Econoline

Restore cabin heat performance with this Four Seasons Heater Core, part number 98594A. Built with an aluminum core and engineered to meet or exceed OEM requirements, it is a direct-fit HVAC heater core for select Ford E-100 Econoline applications.

Compatible with 1969-1974 Ford E-100 Econoline models, this heater core is sized for the specified factory HVAC configuration and supports dependable heat transfer in the vehicle’s heating system. Four Seasons 98594A is a practical replacement when the original core is leaking, restricted, or no longer delivering consistent warm air.

Key Features

• Four Seasons Heater Core, part number 98594A
• Aluminum heater core construction
• Meets or exceeds OEM specifications
• Core dimensions: 7-7/8 in. height, 5-7/8 in. width, 1-7/8 in. thickness
• Tube size: 0.625 in. on both connections
• Designed for select Ford E-100 Econoline HVAC applications

Product Details

This Four Seasons heater core is part of the Heater Core product line and is built as an aluminum heater core for HVAC service. The compact core dimensions and fixed pipe positioning support the factory-style layout used in the listed Ford E-100 Econoline models. If you are replacing a worn or leaking heater core, 98594A provides the correct form factor for the specified heater box configuration.

This part cross-references APDI 9010054 and Nissens 94594 for the same application.

What It Helps Fix

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Moisture or fogging from a leaking heater core
• Restricted coolant flow through the heater circuit
• Heat loss caused by a corroded or damaged core

Installation Notes

Verify the vehicle’s heater box dimensions and tube orientation before installation. This heater core is listed for 1973-1974 Ford E-100 Econoline without air conditioning and with an 8 in. x 6 in. core, as well as 1969-1972 Ford E-100 Econoline with high output heater equipment. Confirm the HVAC configuration against the original part before replacing the core.

For best results, inspect hoses, clamps, and coolant condition during service so the replacement heater core can operate within a clean, properly flowing system.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements, making it a direct replacement option for the specified Ford E-100 Econoline applications. Part number 98594A is built to the dimensional and material specifications shown for accurate fitment and serviceability.