Four Seasons 98539 HVAC Heater Core

Reliable Heater Core Replacement for Classic GM Vehicles

The Four Seasons Heater Core 98539 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 warmth and long-lasting operation for vehicles like the Chevrolet Impala and Pontiac GTO.

• Core dimensions: 9-1/4 inches length, 6 inches width, 2-1/2 inches thickness
• Constructed from corrosion-resistant aluminum material
• Meets or exceeds original equipment manufacturer (OEM) specifications
• Includes dual tubes with precise sizing: 0.625 inch and 0.750 inch diameters
• Compatible with multiple classic GM models including Buick LeMans and Oldsmobile Cutlass Supreme

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering reliable HVAC core components that meet OEM standards for fit and function. The 98539 heater core is part of this line, offering a direct replacement solution with aluminum core material that balances durability and heat transfer efficiency. This product line is tailored for vehicles requiring precise core dimensions and quality construction to maintain proper heating system performance.

Product Details and Specifications

This HVAC heater core features a core height of 9.25 inches, width of 6 inches, and a depth of 2.5 inches, making it suitable for specific GM models such as the Pontiac Catalina and Chevrolet Malibu. The aluminum core material provides resistance to corrosion and efficient heat conduction. The heater core includes two tubes sized at 0.625 inches and 0.750 inches in diameter, designed for seamless integration with the vehicle’s heating system. Note that this model does not have adjustable pipe positioning, ensuring a fixed fit consistent with OEM design.

Common Applications and Problem Resolution

• Restores heating performance in Buick, Chevrolet, Oldsmobile, and Pontiac vehicles
• Replaces leaking or clogged heater cores causing coolant loss
• Eliminates insufficient cabin heat due to core blockages or corrosion
• Addresses heater core failures that result in fogged windows or coolant odors
• Prevents engine overheating related to compromised heater core function

Installation Notes and Tips

When installing the Four Seasons Heater Core 98539, ensure compatibility with your vehicle’s make and model, including Buick LeMans, Chevrolet Bel Air, or Pontiac Tempest. Properly drain the cooling system before removal to avoid spills. Verify tube connections match the specified diameters of 0.625 and 0.750 inches for a secure fit. Since pipe positioning is fixed, confirm alignment with existing HVAC hoses. Follow manufacturer guidelines for reassembly and coolant refilling to maintain system integrity.

Quality Assurance and Warranty Information

The Four Seasons Heater Core 98539 meets or exceeds OEM standards, providing reliable performance and durability. Manufactured with corrosion-resistant aluminum, this heater core is built to withstand typical operating conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.