Four Seasons 90003 HVAC Heater Core - Rear

Reliable Heater Core Replacement for Ford Expedition and Lincoln Navigator

The Four Seasons Heater Core 90003 is designed to restore efficient heating performance in your Ford Expedition or Lincoln Navigator. Crafted from durable aluminum, this heater core meets or exceeds OEM standards to ensure reliable operation and long-lasting durability.

• Core dimensions: 5-7/8 inches length, 6-5/8 inches width, 1-7/8 inches thickness
• Constructed with high-quality aluminum core material
• Core depth of 1.875 inches and core height of 5.875 inches
• Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet tubes
• Designed specifically for Ford Expedition and Lincoln Navigator models
• Meets or exceeds OEM specifications for fit and function

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering dependable HVAC components that maintain vehicle heating system efficiency. This aluminum heater core is engineered to provide consistent heat transfer and corrosion resistance, supporting the overall HVAC system performance in Ford and Lincoln vehicles. The Heater Core product line is known for precise fitment and durability, making it a suitable replacement part for maintaining factory heating capabilities.

Product Details and Specifications

This HVAC heater core features an aluminum construction that offers enhanced heat dissipation and resistance to corrosion compared to traditional materials. The core measures 5-7/8 inches in length, 6-5/8 inches in width, and 1-7/8 inches in thickness, with a core depth of 1.875 inches and height of 5.875 inches. Both inlet and outlet tubes have a diameter of 0.625 inches (15.875 mm), ensuring compatibility with the original vehicle plumbing. The fixed pipe positioning design means the tubes are set in place to match OEM configurations, facilitating straightforward installation in compatible Ford Expedition and Lincoln Navigator models.

Common Applications and Issues Addressed

• Restores heating system performance in Ford Expedition and Lincoln Navigator
• Resolves heater core leaks causing coolant loss or interior fogging
• Eliminates insufficient cabin heat due to clogged or damaged cores
• Prevents overheating issues related to faulty heater cores
• Replaces corroded or deteriorated aluminum cores for improved durability

Installation Notes and Tips

When installing the Four Seasons Heater Core 90003, ensure the vehicle is properly cooled down and coolant is drained to avoid spills. Verify the heater core dimensions and tube sizes match the original part for a precise fit. Since the pipe positioning is fixed, no adjustments are necessary during installation. It is recommended to inspect and replace any worn hoses or seals to prevent future leaks. Professional installation is advised to maintain HVAC system integrity and performance.

Quality Assurance and Warranty

The Four Seasons Heater Core 90003 is manufactured to meet or exceed OEM quality standards, ensuring reliable operation and compatibility with Ford Expedition and Lincoln Navigator models. This part undergoes rigorous testing for durability and performance. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship.