Four Seasons 90017 HVAC Heater Core

Four Seasons 90017 Heater Core Overview

The Four Seasons 90017 heater core is an aluminum HVAC heater core built for direct replacement service in select vehicles. It is specified for 1998-2002 Chevrolet Prizm applications and matches the original-style core dimensions for a proper fit in the heater case.

Four Seasons Heater Core 90017 is part of the brand’s heater core line, focused on replacement HVAC core service with OE-style sizing and aluminum construction. This unit meets or exceeds OEM requirements and is built for the Chevrolet Prizm heater system.

Key Features

• Aluminum heater core construction
• Core dimensions: 8-1/4 in. height, 6-7/8 in. width, 1 in. depth
• Tube size: 0.625 in. / 15.875 mm on both connections
• Direct replacement for 1998-2002 Chevrolet Prizm heater core service
• Meets or exceeds OEM specifications
• Four Seasons part number 90017

Detailed Description

This HVAC heater core is designed for the heating circuit inside the vehicle’s HVAC case, where engine coolant transfers heat to the cabin air stream. The aluminum core material supports efficient heat exchange, while the listed height, width, and depth help confirm fitment during replacement. For buyers searching for a 1998-2002 Chevrolet Prizm heater core, Four Seasons 90017 provides a direct-match option with OE-style dimensions and tube sizing.

This part cross-references Dorman - HELP 90017 for the same application.

What It Helps Fix

• Weak or inconsistent cabin heat
• Coolant odor inside the vehicle
• Moisture or fogging caused by heater core leakage
• Restricted heat transfer from a clogged core
• Replacement needs after heater core corrosion or internal failure

Installation Notes and Tips

Verify the heater core dimensions, tube diameter, and vehicle application before installation. This Four Seasons 90017 heater core is listed with non-adjustable pipe positioning, so the existing HVAC case and hose routing should be checked against the original part. For 1998-2002 Chevrolet Prizm heater core replacement, confirm the core fits securely in the heater housing and that all coolant connections align before reassembly.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM specifications, supporting a replacement that follows original equipment sizing and performance expectations.