Overview

OSC Premium heater core part number 98746 is built to match original equipment form and function for select Ford Econoline applications. It uses premium-grade aluminum construction with cadmium-plated tubes and a die-cut gasket to support leak resistance and long service life.

Key Features

• Drop-in fit, form, and function for the intended HVAC application
• Premium-grade aluminum construction for durability
• Cadmium-plated tubes inside and out to resist premature failure
• Individually pressure tested before release
• Engineered for multi-fit applications without changing the look or fit

Detailed Description

This heater core is designed as an OE-style replacement for the HVAC system and is built around the original cooler design where copper concentric or plate coolers were originally used. OSC states that the unit is made to preserve the factory fit while using materials selected to improve longevity in demanding service. Part number 98746 is a practical choice when replacing a worn heater core in Ford E-150 Econoline, Ford E-250 Econoline, or Ford E-350 Econoline models from 1988-1991.

This part cross-references 99208 for the same application.

Common Issues It Can Address

• Loss of cabin heat from a restricted or failing heater core
• Coolant seepage caused by internal corrosion or tube failure
• Reduced HVAC performance from leaks in the heater circuit
• Repeat failures in high-mileage vehicles with worn original components

Installation Notes and Tips

Verify the vehicles original heater core design and connection style before installation. The unit is engineered for direct replacement use, and the included fittings or hardware are referenced by the manufacturer; confirm the package contents against your application before starting the job. After installation, pressure-test the cooling system and inspect for leaks at all connections.

Quality Assurance

OSC individually pressure tests each heater core and uses cycle, vibration, burst, and environmental testing to validate the design. The product is built to OE form and function standards for the intended application.