Four Seasons 96106 HVAC Heater Core

Four Seasons 96106 Heater Core Overview

The Four Seasons 96106 heater core is an aluminum HVAC heater core built for dependable cabin heat transfer and OE-style replacement service. With a compact 10-5/16 in. height, 7-1/2 in. width, and 1-5/8 in. depth, it is sized for applications that require a precise fit in the heater case.

Compatible With select vehicle applications, this heater core is a direct-fit style replacement for heating system service on models such as Honda Civic and Toyota Corolla where the correct core dimensions and tube layout are critical. Four Seasons 96106 is also referenced by cross numbers including Gates 6963.

Key Features

• Aluminum heater core construction for HVAC heat exchange
• Dimensions: 10-5/16 in. length, 7-1/2 in. width, 1-5/8 in. thickness
• Core height: 10.3125 in.; core width: 7.5 in.; core depth: 1.625 in.
• Two 0.9375 in. (23.8125 mm) tubes
• Meets or exceeds OEM requirements
• Four Seasons heater core line, part number 96106

Product Details

The Four Seasons Heater Core line focuses on replacement HVAC cores that match the original system layout and thermal requirements. Part number 96106 uses an aluminum core material and fixed pipe positioning, with no adjustable pipe positioning, to support accurate installation in the intended heater box. This makes it a practical choice when servicing a leaking, restricted, or inefficient heater core in a vehicle heating system.

Four Seasons 96106 is a direct replacement heater core for applications that call for the listed dimensions and tube size. When verifying fitment for Honda Civic or Toyota Corolla service, compare the core height, width, depth, and tube diameter to the original unit before installation.

Common Heater Core Issues

• Loss of cabin heat due to internal blockage or restricted coolant flow
• Coolant odor inside the cabin from a leaking heater core
• Fogging or film on the windshield caused by HVAC coolant leakage
• Uneven or weak heat output from a deteriorated core
• Cooling system contamination from a failed heater core

Installation Notes

Confirm the original heater core dimensions, tube diameter, and pipe orientation before removal. Drain the cooling system as required, inspect hoses and seals for wear, and flush the HVAC/cooling circuit if contamination is present. After installation, refill and bleed the system according to the vehicle service procedure and verify heater performance at operating temperature.

Quality Assurance

Four Seasons 96106 is listed as meeting or exceeding OEM requirements for the specified heater core application. The aluminum construction and OE-style sizing support consistent replacement service in the intended HVAC system.