Four Seasons 90054 HVAC Heater Core

Reliable Heater Core Replacement for Buick and Cadillac Models

The Four Seasons Heater Core 90054 is designed to restore efficient heating performance in select Buick and Cadillac vehicles. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation for your DeVille, Park Avenue, or Seville.

• Core dimensions: 10-3/8 inches length, 6-3/8 inches width, 1 inch thickness
• Constructed from corrosion-resistant aluminum material
• Meets or exceeds OEM specifications for reliable fit and function
• Includes two tubes: 0.625 inch and 0.750 inch diameter for proper coolant flow
• Designed specifically for Buick DeVille, Cadillac Park Avenue, and Seville models

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on delivering quality HVAC components that meet or exceed original equipment manufacturer standards. This aluminum heater core model 90054 is part of that line, offering precise fitment and dependable heating performance for compatible vehicles. The product line emphasizes durability and efficient heat exchange to maintain cabin comfort in various driving conditions.

Product Details and Specifications

This HVAC heater core features a core height of 10.375 inches, width of 6.375 inches, and a depth of 1 inch, providing an exact replacement for the original part. The aluminum core material offers resistance to corrosion and efficient heat transfer, essential for maintaining optimal HVAC system performance. The heater core does not include adjustable pipe positioning, ensuring a direct fit for the specified Buick and Cadillac models. Tubes measure 0.625 inch and 0.750 inch in diameter, matching OEM coolant line connections.

Common Applications and Problem Resolution

• Restores heating function in Buick DeVille, Cadillac Park Avenue, and Seville HVAC systems
• Replaces leaking or clogged heater cores causing coolant loss or poor cabin heat
• Solves issues with fogged windows due to heater core failure
• Addresses overheating caused by inefficient heat exchange
• Eliminates unpleasant odors from coolant leaks inside the vehicle

Installation Notes and Tips

Installation of the Four Seasons Heater Core 90054 should be performed by a qualified technician familiar with HVAC systems in Buick and Cadillac vehicles. Ensure the cooling system is properly drained before removal. Verify tube sizes and core dimensions match the original part to avoid fitment issues. After installation, flush the cooling system and check for leaks to confirm proper operation.

Quality Assurance and Warranty

This heater core meets or exceeds OEM standards, providing reliable performance and durability. Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Refer to the manufacturer’s warranty documentation for specific terms related to part number 90054.