Four Seasons 98516 HVAC Heater Core

Reliable Heater Core Replacement for Buick, Chevrolet, Oldsmobile, and Pontiac

The Four Seasons Heater Core 98516 is designed to restore efficient heating performance in select Buick, Chevrolet, Oldsmobile, and Pontiac models. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation.

• Core dimensions: 8-1/4 inches length, 5-1/2 inches width, 2 inches thickness
• Constructed from corrosion-resistant aluminum material
• Core depth of 2.000 inches and core height of 8.250 inches
• Tube sizes: 0.625 inch (15.875 mm) and 0.750 inch (19.050 mm)
• Meets or exceeds OEM specifications for reliable fit and function
• Compatible with Buick, Chevrolet, Oldsmobile, and Pontiac models including Century, Cutlass Ciera, LeSabre, and Skylark

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering replacement heater cores that meet or exceed original equipment manufacturer standards. This product line emphasizes durable aluminum cores designed for efficient heat transfer and corrosion resistance. The Heater Core 98516 is part of this line, providing a direct-fit solution for various GM vehicles to maintain proper HVAC system performance.

Product Details and Specifications

This HVAC heater core features an aluminum core measuring 8.25 inches in height, 5.5 inches in width, and 2 inches in thickness, providing optimal heat exchange capacity. The two inlet and outlet tubes measure 0.625 inch and 0.750 inch respectively, ensuring compatibility with the vehicle’s coolant lines. The core’s aluminum construction offers resistance to corrosion and enhances durability compared to traditional copper cores. This heater core does not include adjustable pipe positioning, maintaining a fixed configuration for straightforward installation.

Common Applications and Problem Resolution

• Restores heating function in Buick Century, Chevrolet Celebrity, and Pontiac Phoenix models
• Replaces leaking or clogged heater cores causing coolant loss or poor cabin heat
• Eliminates unpleasant odors from a failing heater core
• Resolves fogging or moisture buildup inside the vehicle due to heater core leaks
• Improves HVAC system efficiency and passenger comfort

Installation Notes and Tips

Installation of the Four Seasons Heater Core 98516 requires draining the vehicle’s cooling system and removal of the dashboard or HVAC housing, depending on the model. Ensure all coolant lines are properly connected to the 0.625 inch and 0.750 inch tubes to prevent leaks. Verify that the heater core is securely seated and that no kinks or obstructions exist in the coolant flow path. It is recommended to flush the cooling system before installation to remove debris and prevent premature clogging.

Quality Assurance and Warranty

The Four Seasons Heater Core 98516 meets or exceeds OEM standards, ensuring reliable performance and fitment for compatible Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Manufactured with corrosion-resistant aluminum, this heater core is built for durability. Four Seasons typically offers a limited warranty on their HVAC components; please refer to the product documentation for specific warranty details.