Spectra 99321 HVAC Heater Core - Front

Spectra 99321 HVAC Heater Core

The Spectra 99321 HVAC heater core is a direct-fit replacement for select Ford and Mercury applications. It is built to meet or exceed original equipment performance standards, making it a practical choice for restoring cabin heat and defrost function.

Key Features

• HVAC heater core for front heater system applications
• OE-style replacement for 2006-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, and 2006-2010 Mercury Mountaineer
• Engineered with manufacturing controls and quality checks for consistent fit and function
• Cross-references APDI 9010366 and Dorman - HELP 91146 for the same application
• Part number 99321 for easy catalog lookup

Detailed Description

Built by Spectra Premium, this heater core is intended for vehicles that need reliable heat transfer through the HVAC system. The design supports original-equipment-style performance and fitment for Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer models in the listed front-position applications. If you are replacing a leaking, restricted, or inefficient heater core, Spectra 99321 provides a focused replacement solution for these platforms.

Compatible With: 2008-2010 Ford Explorer, front; 2007-2010 Ford Explorer Sport Trac, front; 2007-2010 Mercury Mountaineer, front; 2006-2007 Ford Explorer, front, from Dec/04/2006; 2006 Mercury Mountaineer, front, from Dec/04/2006.

Common Problems This Part Can Address

• Weak or uneven cabin heat
• Coolant odor inside the vehicle
• Coolant seepage from the HVAC case area
• Restricted heater core flow affecting defrost performance
• Temperature control issues caused by a failing heater core

Installation Notes and Tips

Verify the vehicle year, model, and front-position application before installation. On 2006 Explorer and 2006 Mountaineer applications, confirm the build date note of from Dec/04/2006. Inspect hoses, clamps, and coolant condition during replacement, and flush the cooling system if contamination is present.

Quality Assurance

Spectra Premium states that its HVAC heater cores are manufactured with engineering controls, production technology, and quality inspection processes to meet or exceed the performance of the original equipment they replace.