Four Seasons 54891 A/C Evaporator Core - Rear

Reliable A/C Evaporator Core for Ford, Lincoln, and Mercury Vehicles

The Four Seasons Evaporator Core part number 54891 is designed to restore efficient air conditioning performance in select Ford, Lincoln, and Mercury models. Engineered with precise dimensions and durable materials, this evaporator core ensures proper fit and function for vehicles like the Ford Explorer and Lincoln Aviator.

• Compatible with Ford Explorer, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, and Mercury Mountaineer
• Core dimensions: approximately 10.5 inches wide, 7 inches high, and 3.5 inches deep
• Constructed from corrosion-resistant aluminum with plate and fin design
• Inlet fitting: Female o-ring with No. 8 outside diameter
• Outlet fitting: Female springlock with No. 12 outside diameter
• Includes green o-rings for secure sealing (one [24608] and three [24670])

Detailed Product Description and Specifications

This Four Seasons Evaporator Core (part number 54891) features a plate and fin construction made from aluminum, providing durability and efficient heat exchange. The core measures approximately 10.5 inches in width, 7 inches in height, and 3.5 inches in depth (90.5 mm depth), ensuring a precise fit within the HVAC system of compatible vehicles. The inlet and outlet fittings are designed for secure connections, with a female o-ring inlet fitting sized at No. 8 and a female springlock outlet fitting sized at No. 12. The included green o-rings ([24608] and [24670]) help maintain a leak-free seal, critical for optimal A/C system performance.

About the Four Seasons Evaporator Core Product Line

The Evaporator Core line by Four Seasons focuses on delivering reliable HVAC components that meet OEM specifications. This product line emphasizes quality materials and precise fitment to ensure proper airflow and cooling efficiency. The 54891 evaporator core is part of this line, designed specifically for select Ford, Lincoln, and Mercury models to maintain factory-level air conditioning performance.

Common Issues Addressed by This Evaporator Core

• Reduced cooling efficiency or warm air from A/C vents
• Leaks or damage in the evaporator core causing refrigerant loss
• Unusual odors or moisture buildup inside the vehicle cabin
• HVAC system failure due to clogged or corroded evaporator core
• Inconsistent airflow or poor temperature regulation

Installation Notes and Tips

• Ensure compatibility with your specific Ford, Lincoln, or Mercury model before installation
• Replace all associated O-rings and seals to prevent refrigerant leaks
• Handle the aluminum core carefully to avoid damage to fins and tubes
• Follow manufacturer HVAC system service procedures for safe removal and installation
• Recharge the A/C system with the correct refrigerant type and amount after installation

Quality Assurance and Warranty Information

Four Seasons manufactures this evaporator core to meet or exceed OEM standards, using corrosion-resistant aluminum and precision fittings. The part number 54891 is backed by Four Seasons' quality control processes to ensure reliable performance. Warranty coverage details should be confirmed with the product documentation or supplier.