Four Seasons 98488A HVAC Heater Core

Four Seasons 98488A Heater Core Overview

The Four Seasons 98488A heater core is an aluminum HVAC replacement built for heat transfer efficiency and OE-style fit. It is listed for 1984-1986 Buick Regal models equipped with air conditioning, making it a direct-match option for restoring cabin heat performance.

As part of the Four Seasons Heater Core line, this unit focuses on core dimensions and tube sizing that align with the original application. The 98488A heater core is a practical replacement for Buick Regal heating system service where coolant flow through the cabin heater circuit has been compromised.

Key Features

• Aluminum heater core construction for efficient thermal transfer
• Core dimensions: 8-3/8 in. length, 6 in. width, and 1-7/8 in. thickness
• Tube sizes: 0.625 in. and 0.750 in. for application-specific connection points
• Meets or exceeds OEM requirements
• Compatible with 1984-1986 Buick Regal, N/A, equipped with air conditioning
• Four Seasons part number 98488A for catalog and service reference

Detailed Description

The Four Seasons Heater Core 98488A is an aluminum HVAC heater core designed for vehicles that require a compact, efficient heat exchanger inside the climate control system. With a core height of 8.375 inches, core width of 6.000 inches, and core depth of 1.875 inches, it is sized for the specified Buick Regal application. This heater core is listed as an OE-level replacement and is built to match the original-style tube configuration without adjustable pipe positioning.

Fits 1984-1986 Buick Regal, N/A, equipped with air conditioning. This part cross-references Spectra Premium 94488 for the same application.

Common Problems This Part Can Address

• Weak or inconsistent cabin heat output
• Coolant seepage from a deteriorated heater core
• Restricted coolant flow through the HVAC heater circuit
• Fogging or sweet odor caused by heater core leakage
• Loss of defrost performance tied to poor heater operation

Installation Notes and Tips

Verify the core dimensions, tube diameters, and vehicle configuration before installation. This heater core is listed for Buick Regal models with air conditioning, so confirm the HVAC layout and hose routing against the original unit. Proper system flushing and leak inspection are recommended before returning the vehicle to service.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements. The 98488A part number is supported by multiple cross-references, including OE-style aftermarket listings, which helps confirm application alignment for the specified Buick Regal fitment.