Four Seasons 98538 HVAC Heater Core

Four Seasons 98538 Heater Core Overview

The Four Seasons 98538 heater core is an aluminum HVAC heater core built to meet or exceed OEM requirements. With a compact 7-3/4 in. height, 6 in. width, and 2-1/2 in. depth, it is sized for direct replacement applications where dependable cabin heat and proper coolant flow are critical.

Four Seasons heater core line parts are focused on accurate fit, material consistency, and OE-style replacement performance for HVAC service work.

Key Features

• Aluminum heater core construction for efficient heat transfer
• Dimensions: 7-3/4 in. length, 6 in. width, 2-1/2 in. thickness
• Core height: 7.750 in.; core width: 6.000 in.; core depth: 2.500 in.
• Tube sizes: 0.625 in. and 0.750 in.
• Meets or exceeds OEM specifications
• Direct replacement HVAC heater core, part number 98538

Detailed Description

Four Seasons 98538 is an aluminum heater core designed for HVAC systems that require a compact, OE-style core with consistent thermal performance. The aluminum core material supports efficient heat exchange, while the listed dimensions and tube sizes help match the original heater core layout during service. This part number 98538 is a practical choice for technicians and owners servicing heater core replacement needs on vehicles such as Honda Civic and Toyota Corolla applications where the correct HVAC core dimensions are essential.

This heater core cross-references Spectra Premium 94538 for the same application.

What It Helps Fix

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Heater core leakage at the HVAC case
• Restricted coolant flow through the heater circuit
• Temperature control problems caused by a failing core

Installation Notes and Tips

Verify core dimensions, tube diameter, and pipe orientation against the original unit before installation. Because adjustable pipe positioning is not included, alignment should be checked carefully during HVAC service. Flush the cooling system and inspect hoses, clamps, and the heater control circuit before installing the replacement heater core 98538.

Compatible With select Honda Civic and Toyota Corolla heater core applications when the listed dimensions and tube sizes match the original part.

Quality Assurance

This Four Seasons heater core is built to meet or exceed OEM specifications for replacement use. The aluminum construction and OE-style sizing support consistent fitment and dependable HVAC service results.