Four Seasons 96126 HVAC Heater Core

Four Seasons 96126 Heater Core Overview

The Four Seasons 96126 heater core is an aluminum HVAC heater core built for dependable cabin heat and stable coolant-to-air transfer. It is part of the Four Seasons Heater Core line, which focuses on replacement components engineered and tested for long service life in automotive heating systems.

With a compact aluminum construction and OE-style dimensions, this heater core is a direct-fit replacement for select vehicle heating systems, including applications such as Honda Civic and related fitments where the original core matches these specifications.

Key Features

• Aluminum heater core construction for efficient heat exchange
• Core dimensions: 8 in. width, 7.81 in. height, 1.875 in. depth
• Tube size: 0.75 in. / 19.05 mm on both connections
• Designed as an HVAC heater core replacement
• Four Seasons part number 96126 for catalog matching and service lookup

Product Details

The Four Seasons Heater Core line is built around replacement parts that follow practical OE-style sizing and material choices. This aluminum heater core is intended for vehicles that require a compact core with 0.75-inch inlet and outlet tubes, making it a strong match for heating system repairs where the original core has leaked, restricted flow, or lost heat output. If you are sourcing a heater core for Honda Civic service work or other listed applications, Four Seasons 96126 provides a straightforward replacement reference.

This part cross-references Gates 6928 for the same application.

Common Problems This Part Can Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle from a leaking heater core
• Fogging or film on the windshield caused by HVAC coolant leakage
• Restricted coolant flow through a clogged heater core
• Heating system performance loss after corrosion or internal buildup

Installation Notes and Tips

Verify core width, height, depth, and tube diameter against the removed unit before installation. Confirm hose routing, tube orientation, and HVAC case fitment during service, especially on Honda Civic applications and other vehicles with tight dash-mounted heater core packaging. Flush the cooling system and inspect hoses, clamps, and seals before reassembly to help protect the new core from contamination.

Quality Assurance

Four Seasons states that its products are engineered and tested for years of trouble-free operation, supported by more than 50 years of mobile A/C experience. The 96126 heater core is built to meet that replacement standard for HVAC service.