Four Seasons 98516 HVAC Heater Core

Four Seasons 98516 Heater Core Overview

Four Seasons 98516 is an aluminum HVAC heater core built for direct replacement in a range of GM compact and midsize cars and wagons. It measures 8-1/4 inches high, 5-1/2 inches wide, and 2 inches deep, with 0.625 in and 0.750 in tube sizes for applications that require this specific core layout.

As part of the Four Seasons Heater Core line, this unit is made to meet or exceed OEM requirements and is focused on restoring cabin heat performance in vehicles such as the Buick Century, Oldsmobile Cutlass Ciera, and Pontiac 6000.

Key Features

• Aluminum heater core construction
• Core dimensions: 8-1/4 in x 5-1/2 in x 2 in
• Tube sizes: 0.625 in and 0.750 in
• Meets or exceeds OEM specifications
• Direct-fit HVAC heater core for selected applications
• Four Seasons part number 98516

Detailed Description

Four Seasons 98516 is an aluminum heater core designed for vehicles that use this exact core size and tube configuration. It is listed for a broad set of applications including 1980-1996 Buick Century, 1980-1985 Buick Skylark, 1988 Buick LeSabre, 1982-1990 Chevrolet Celebrity, 1980-1985 Chevrolet Citation, 1984-1985 Chevrolet Citation II, 1980-1984 Oldsmobile Omega, 1982-1996 Oldsmobile Cutlass Ciera, 1987-1994 Oldsmobile Cutlass Cruiser, 1982-1991 Pontiac 6000, and 1980-1984 Pontiac Phoenix.

This heater core is a practical replacement when the original HVAC core has restricted flow, leakage, or reduced heat transfer. The aluminum core material supports efficient thermal exchange, while the fixed pipe positioning helps match the original HVAC routing in the listed vehicles. If you are searching for a heater core for a 1993-1996 Buick Century or a heater core for a 1982-1996 Oldsmobile Cutlass Ciera with air conditioning, Four Seasons 98516 is a direct reference to verify against the original part.

This part cross-references Spectra Premium 94516 for the same application.

What It Helps Address

• Weak or inconsistent cabin heat
• Coolant seepage from a failing heater core
• Restricted coolant flow through the HVAC core
• Fogging or moisture issues caused by heater core leakage
• Loss of defrost performance in the heating system

Installation Notes and Tips

Verify core dimensions, tube diameters, and pipe orientation against the original unit before installation. This heater core does not use adjustable pipe positioning, so alignment with the factory HVAC case and coolant lines should be checked carefully. On listed applications, confirm whether the vehicle is equipped with air conditioning, since several fitments note that configuration.

For best results, inspect hoses, clamps, and the HVAC case for wear or contamination before installing the replacement core. Flushing the cooling system and checking for debris can help protect the new heater core from early restriction.

Quality Assurance

Four Seasons identifies this heater core as meeting or exceeding OEM requirements. The Four Seasons Heater Core line is built for replacement applications where correct fit, material selection, and thermal performance matter in the vehicle heating system.