Four Seasons 90774 HVAC Heater Core

Reliable Heater Core Replacement for Ford, Lincoln, and Mercury Vehicles

The Four Seasons Heater Core 90774 is designed to restore efficient heating performance in select Ford, Lincoln, and Mercury models. Engineered with durable aluminum construction, this heater core ensures consistent warmth and reliable operation for your vehicle's HVAC system.

• Core dimensions: 7-3/8 inches length, 5-7/8 inches width, 1-7/8 inches thickness
• Constructed from corrosion-resistant aluminum material
• Tube diameter: 0.75 inches (19.05 mm) for both inlet and outlet
• Meets or exceeds OEM specifications for quality and fit
• Compatible with Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird models

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on delivering reliable HVAC heater cores that meet or exceed original equipment manufacturer standards. This aluminum heater core model 90774 is part of that line, offering a balance of durability and efficient heat transfer to maintain cabin comfort in your vehicle.

Product Details and Specifications

This HVAC heater core features a core height of 7.375 inches, width of 5.875 inches, and a depth of 1.875 inches, providing a precise fit for the specified vehicle applications. The aluminum core material enhances heat dissipation while resisting corrosion, contributing to longer service life. Both inlet and outlet tubes measure 0.75 inches in diameter, ensuring proper coolant flow through the core. The fixed pipe positioning design simplifies installation without the need for adjustments.

Common Applications and Problem Resolution

• Restores heating functionality in Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird vehicles
• Replaces leaking or clogged heater cores causing coolant loss or poor cabin heat
• Eliminates unpleasant odors from a failing heater core
• Resolves fogging issues inside the vehicle due to heater core leaks
• Improves overall HVAC system efficiency and passenger comfort

Installation Notes and Tips

When installing the Four Seasons Heater Core 90774, ensure compatibility with your specific vehicle model and year. The heater core's fixed pipe positioning requires careful alignment with existing HVAC connections. It is recommended to flush the cooling system before installation to prevent contamination. Professional installation is advised to avoid damage to the core or HVAC components.

Quality Assurance and Warranty Information

The Four Seasons Heater Core 90774 meets or exceeds OEM standards, providing reliable performance and durability. This part is manufactured to strict quality controls to ensure proper fit and function in Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird vehicles. Please refer to Four Seasons' warranty policy for specific coverage details.