One Stop Solutions 98574 HVAC Heater Core

OE-Style Heater Core for Classic Ford and Mercury

Restore cabin heat performance with this OSC Premium new HVAC heater core, part number 98574. It is built for original equipment form and function, with a direct replacement design for vehicles originally equipped with a copper-style core.

Key Features

• Drop-in fit, form, and function for straightforward replacement
• Premium-grade aluminum construction for added durability
• Cadmium-plated tubes inside and out to help resist premature failure
• Individually pressure tested for leak verification before shipment
• Includes necessary foam and accessories for the core assembly
• Built to address original design weaknesses in higher-mileage vehicles
• Cycle, vibration, burst, and environmental testing used in validation

Detailed Description

OSC 98574 is an aluminum HVAC heater core engineered as an OE-style replacement for classic Ford and Mercury applications. It is designed to match original fit and function while using premium materials and protective tube plating to improve durability in demanding heating and cooling systems. This heater core is a direct replacement for copper-designed units and is a practical choice for restoring heat output in a 1967-1973 Ford Mustang, 1971-1973 Ford Pinto, 1967-1973 Mercury Cougar, or 1969 Mercury Montego with air conditioning systems.

This part cross-references NGK 94574 for the same application.

What It Can Help Solve

• Weak or inconsistent cabin heat
• Coolant seepage from a leaking heater core
• Restricted flow caused by internal corrosion or age
• Fitment issues when replacing an original copper-style core
• Repeat failures in high-mileage heating systems

Installation Notes and Tips

Verify vehicle equipment before ordering, since this heater core is listed for vehicles with air conditioning systems. Compare the original core dimensions, hose routing, and mounting points before installation. Flush the cooling system and inspect related hoses, clamps, and seals so the replacement core is not exposed to contamination from the rest of the system.

Quality Assurance

Each OSC heater core is individually pressure tested, and the design is validated through cycle, vibration, burst, and environmental testing. The aluminum construction and plated tubes are selected to support long-term service in classic Ford and Mercury heating systems.