Four Seasons 90004 HVAC Heater Core - Front

Reliable Heater Core Replacement for Ford Excursion and Super Duty Trucks

The Four Seasons Heater Core 90004 is designed to restore efficient heating performance in your Ford Excursion, F-250, F-250 Super Duty, F-350, and F-350 Super Duty. Engineered with durable aluminum construction, this heater core meets or exceeds OEM standards to ensure consistent warmth and comfort during colder months.

• Core dimensions: 7-3/4 inches length, 7-1/4 inches width, 1-7/8 inches thickness
• Constructed from corrosion-resistant aluminum for long-lasting durability
• Compatible with Ford Excursion, F-250, F-250 Super Duty, F-350, and F-350 Super Duty models
• Includes dual 5/8 inch (15.875 mm) inlet and outlet tubes for efficient coolant flow
• Meets or exceeds OEM specifications for reliable fit and function

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core product line focuses on delivering high-quality HVAC heater cores designed to maintain optimal cabin heating performance. This line emphasizes precise fitment and durable aluminum core material, providing a dependable replacement part for various vehicle makes and models. The Heater Core 90004 is part of this line, offering a direct replacement solution for select Ford trucks.

Detailed Product Description and Specifications

This HVAC heater core features a core height of 7.75 inches, width of 7.25 inches, and a depth of 1.875 inches, making it a precise fit for the specified Ford models. The aluminum core material enhances heat transfer efficiency while resisting corrosion, which is critical for maintaining long-term performance. The heater core includes two 0.625 inch (15.875 mm) tubes for coolant circulation, ensuring effective heat exchange within the vehicle’s HVAC system. Note that this model does not have adjustable pipe positioning, so proper alignment during installation is necessary.

Common Applications and Issues Addressed

• Restores heating functionality in Ford Excursion and Super Duty trucks
• Resolves coolant leaks within the heater core assembly
• Eliminates reduced cabin heat output due to clogged or damaged cores
• Prevents engine overheating caused by compromised heater core flow
• Replaces corroded or deteriorated aluminum cores for improved HVAC reliability

Installation Notes and Tips

• Ensure compatibility with Ford Excursion, F-250, F-250 Super Duty, F-350, and F-350 Super Duty before installation
• Carefully remove the old heater core to avoid damage to surrounding HVAC components
• Verify that inlet and outlet tubes align correctly with vehicle coolant lines, as pipe positioning is fixed
• Flush the cooling system to remove debris before installing the new heater core
• Test the HVAC system after installation to confirm proper heating operation and leak-free connections

Quality Assurance and Warranty

The Four Seasons Heater Core 90004 is manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. This part undergoes rigorous quality control to maintain consistent fit and function. While specific warranty details may vary, Four Seasons typically offers coverage against defects in materials and workmanship to provide confidence in your replacement part.