Four Seasons 90014 HVAC Heater Core

Reliable Heater Core Replacement for Chevrolet and GMC Vehicles

The Four Seasons Heater Core 90014 is designed to restore efficient heating performance in select Chevrolet, GMC, Isuzu, and Oldsmobile models. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation.

• Core dimensions: 8-1/4 inches length, 7-1/8 inches width, 1-3/8 inches thickness
• Constructed from corrosion-resistant aluminum material
• Core depth of 1.375 inches and height of 8.250 inches for precise fitment
• Tube sizes: 0.750 inch (19.05 mm) and 0.625 inch (15.875 mm) for proper coolant flow
• Meets or exceeds OEM specifications for reliable performance
• Compatible with Chevrolet Blazer, GMC Jimmy, Isuzu Hombre, Oldsmobile Bravada, Chevrolet S10, and GMC Sonoma

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering replacement cores that match or exceed original equipment manufacturer standards. This product line emphasizes quality materials such as aluminum for enhanced heat conduction and corrosion resistance. The Heater Core 90014 is part of this line, providing a direct-fit solution for various GM and Isuzu models to maintain proper HVAC system function.

Product Details and Specifications

This HVAC heater core features an aluminum core designed for durability and efficient heat transfer. The core measures 8.25 inches in height, 7.125 inches in width, and 1.375 inches in depth, ensuring compatibility with the specified vehicle models. The heater core includes two tubes sized at 0.75 inches and 0.625 inches in diameter, facilitating proper coolant circulation. The fixed pipe positioning design simplifies installation without the need for adjustments.

Common Applications and Problem Resolution

• Restores heating function in Chevrolet Blazer and GMC Jimmy HVAC systems
• Replaces leaking or clogged heater cores in Isuzu Hombre and Oldsmobile Bravada
• Eliminates coolant odors and fogging issues inside the cabin
• Prevents engine overheating caused by heater core failures
• Improves overall HVAC system efficiency in Chevrolet S10 and GMC Sonoma

Installation Notes and Tips

Installation of the Four Seasons Heater Core 90014 requires draining the vehicle’s cooling system and removing the dashboard or HVAC housing, depending on the model. Ensure all connections are secure and free of debris before reassembly. Since this heater core does not feature adjustable pipe positioning, verify fitment carefully to avoid installation issues. It is recommended to replace coolant and inspect related HVAC components during installation.

Quality Assurance and Warranty

The Four Seasons Heater Core 90014 meets or exceeds OEM standards, providing reliable performance and durability. Manufactured with corrosion-resistant aluminum, this heater core is designed to withstand typical operating conditions. Four Seasons products typically include a limited warranty; please refer to the manufacturer’s documentation for specific warranty details.