Four Seasons 90786 HVAC Heater Core - Rear

Reliable Heater Core Replacement for Mercury Quest and Nissan Villager

The Four Seasons Heater Core 90786 is designed to restore efficient heating performance in your Mercury Quest or Nissan Villager. 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, 6-1/4 inches width, 1-7/8 inches thickness
• Constructed from corrosion-resistant aluminum material
• Meets or exceeds original equipment manufacturer (OEM) specifications
• Compatible with Mercury Quest and Nissan Villager models
• Part number 90786 for precise identification and fitment

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering high-quality HVAC heater cores engineered for optimal heat transfer and durability. This aluminum heater core design provides efficient heating performance while resisting corrosion and wear, making it a dependable replacement part for your vehicle’s HVAC system.

Product Details and Specifications

This heater core features a compact design with a length of 5-7/8 inches, width of 6-1/4 inches, and thickness of 1-7/8 inches, making it a direct replacement for the original component in Mercury Quest and Nissan Villager vehicles. The aluminum core material enhances heat conduction and resists corrosion, contributing to a longer service life. Part number 90786 ensures compatibility and easy identification when sourcing replacement parts.

Common Issues Resolved by This Heater Core

• Insufficient cabin heat due to clogged or leaking heater core
• Coolant leaks inside the vehicle causing foggy windows or damp carpets
• Overheating engine caused by compromised heater core function
• Unpleasant odors from coolant leaks within the HVAC system
• Reduced HVAC system efficiency impacting passenger comfort

Installation Notes and Tips

When replacing the heater core in your Mercury Quest or Nissan Villager, ensure the cooling system is properly drained before removal. Handle the aluminum core carefully to avoid damage to the fins and tubes. Verify all hose connections are secure and free of leaks after installation. It is recommended to flush the cooling system to remove any debris before installing the new heater core 90786.

Quality Assurance and Warranty

The Four Seasons Heater Core 90786 is manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. This part undergoes rigorous quality control to maintain consistent specifications. Please refer to Four Seasons’ warranty policy for specific coverage details.