Four Seasons 90057 HVAC Heater Core - Rear

Reliable Heater Core Replacement for GM SUVs

The Four Seasons Heater Core 90057 is designed to restore efficient heating performance in select Cadillac, Chevrolet, and GMC SUVs. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation for vehicles like the Escalade ESV, Suburban 1500, Suburban 2500, Tahoe, Yukon, Yukon XL 1500, and Yukon XL 2500.

• Core dimensions: 7-1/4 inches length, 6-1/4 inches width, 1 inch 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 reliable fit and function
• Designed specifically for HVAC heater core applications in GM full-size SUVs

Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering quality HVAC components that meet or exceed original equipment standards. The 90057 heater core is part of this line, offering precise fitment and durable aluminum construction to maintain optimal heating system performance in your vehicle. This product line emphasizes compatibility and reliability for a range of GM SUVs.

Product Details and Specifications

This aluminum heater core features a core height of 7.25 inches, width of 6.25 inches, and a depth of 1 inch, providing efficient heat exchange within the HVAC system. Both inlet and outlet tubes measure 0.75 inches in diameter, ensuring proper coolant flow. The fixed pipe positioning design simplifies installation without the need for adjustments. The core material is aluminum, chosen for its thermal conductivity and resistance to corrosion, which helps extend the service life of the heater core.

Common Applications and Problem Resolution

• Restores heating function in Cadillac Escalade ESV and Chevrolet Suburban models
• Replaces leaking or clogged heater cores in GMC Yukon and Yukon XL SUVs
• Solves issues with insufficient cabin heat or coolant leaks inside the vehicle
• Addresses heater core failures causing fogging or coolant odor in the cabin
• Improves HVAC system efficiency and passenger comfort during cold weather

Installation Notes and Tips

When installing the Four Seasons Heater Core 90057, ensure compatibility with your specific vehicle model and year. The fixed pipe positioning requires careful alignment with existing HVAC connections. It is recommended to flush the cooling system before installation to prevent contamination. Proper sealing and secure hose connections will help avoid leaks and maintain system pressure.

Quality Assurance and Warranty

The Four Seasons Heater Core 90057 meets or exceeds OEM standards, providing dependable performance for your vehicle's heating system. Manufactured with corrosion-resistant aluminum, this heater core is built for durability. While specific warranty details are not provided, Four Seasons products typically adhere to industry quality controls to ensure customer satisfaction and product reliability.