Four Seasons 90485 HVAC Heater Core

Reliable Heater Core Replacement for Buick and Chevrolet Models

The Four Seasons Heater Core 90485 is designed to restore efficient heating performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation for models like the Cutlass, Lumina, and Monte Carlo.

• Core dimensions: 8 inches length, 6-1/4 inches width, 1 inch thickness
• Constructed from corrosion-resistant aluminum material
• Core depth and height both measure 1 inch and 8 inches respectively
• Tube sizes: 0.625 inch (15.875 mm) and 0.750 inch (19.05 mm)
• Meets or exceeds OEM specifications for reliable fit and function

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on providing high-quality HVAC heater cores that match or surpass original equipment standards. This product line emphasizes durable aluminum cores designed for efficient heat exchange and compatibility with a range of domestic vehicles. The 90485 heater core is part of this line, offering a direct replacement solution for specific GM models requiring precise fitment and performance.

Product Details and Specifications

This HVAC heater core features an aluminum core measuring 8 inches in length, 6-1/4 inches in width, and 1 inch in thickness, providing effective heat transfer within the vehicle’s heating system. The core height and depth are both 8 inches and 1 inch respectively, ensuring proper fit within the HVAC housing. The inlet and outlet tubes measure 0.625 inch and 0.750 inch in diameter, compatible with the original plumbing of the vehicle’s heating system. The heater core does not include adjustable pipe positioning, maintaining OEM-style installation requirements.

Compatible Vehicles and Common Applications

• Buick Cutlass, Cutlass Ciera, Cutlass Supreme, Regal
• Chevrolet Lumina, Malibu, Monte Carlo
• Oldsmobile Cutlass, Cutlass Supreme
• Pontiac Grand Prix
• Replacement for faulty or leaking heater cores causing heating issues

Installation Notes and Tips

Installation of the Four Seasons Heater Core 90485 requires removal of the vehicle’s HVAC housing to access the core. Ensure all coolant is drained before removal to prevent spills. Verify tube sizes and core dimensions match the original part for proper fit. Since this heater core does not have adjustable pipe positioning, alignment with existing plumbing must be precise. It is recommended to inspect and replace any worn seals or gaskets during installation to prevent leaks.

Quality Assurance and Warranty

The Four Seasons Heater Core 90485 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. While specific warranty details are not provided, Four Seasons products generally adhere to industry quality controls to ensure customer satisfaction and part longevity.