Four Seasons 92099 HVAC Heater Core

Four Seasons 92099 Heater Core Overview

Four Seasons 92099 is an aluminum HVAC heater core built for direct replacement service in select Ford, Lincoln, and Mercury applications. It matches the listed dimensions and meets or exceeds OEM requirements for a dependable heating system repair.

Compatible with 2006-2012 Ford Fusion, 2007-2012 Lincoln MKZ, 2006-2011 Mercury Milan, and 2006 Lincoln Zephyr, this heater core is sized for proper fit in the HVAC case and consistent coolant heat transfer.

Key Features

• Aluminum heater core construction for efficient heat exchange
• Dimensions: 10-1/8 in. length, 6-3/8 in. width, and 1 in. thickness
• Core height: 10.125 in.; core width: 6.375 in.; core depth: 1 in.
• Tube size: 0.625 in. on both connections
• Meets or exceeds OEM specifications
• Four Seasons heater core part number 92099

Detailed Description

Four Seasons Heater Core 92099 is an aluminum heater core designed for vehicles that rely on a compact HVAC core with 0.625 in. inlet and outlet tubes. The aluminum core material supports efficient transfer of engine coolant heat into the cabin air stream, helping restore normal heater performance in Ford Fusion, Lincoln MKZ, Mercury Milan, and Lincoln Zephyr models. The Four Seasons heater core line focuses on direct-fit HVAC replacement parts, and this unit follows the listed OE-style dimensions for proper case fitment.

This part cross-references Dorman - HELP 91099 for the same application.

What It Is Used For

• Restoring weak or inconsistent cabin heat
• Replacing a leaking heater core that causes coolant loss
• Addressing fogging or sweet coolant odor inside the cabin
• Repairing restricted coolant flow through the HVAC heater circuit
• Returning heater output to normal in Ford Fusion, Lincoln MKZ, and Mercury Milan applications

Installation Notes and Tips

Verify the heater core dimensions and tube orientation against the original unit before installation. Inspect heater hoses, clamps, and the HVAC case for wear or contamination while the system is open. Proper coolant refill and air bleeding are important after replacement to help prevent trapped air and uneven heater performance.

Quality Assurance

Four Seasons 92099 meets or exceeds OEM specifications and is built as an aluminum heater core for HVAC replacement service.