EVIL ENERGY Thermostat Housing Kit for Ford Explorer & Mercury Mountaineer 4.0L V6 — 2002-2010, includes thermostat & gasket

EVIL ENERGY Thermostat Housing Kit 2L2Z8592AA is a complete replacement assembly that controls coolant flow and helps your 4.0L V6 engine reach and maintain its proper operating temperature.

The EVIL ENERGY kit includes a thermostat, rubber gasket, plastic housing and nitrile gloves, engineered to replace OE part numbers 2L2Z8592AA, 2L2Z8592BA, 2L2Z8592BB and 6L2Z8592FA. It fits Ford Explorer and Mercury Mountaineer models equipped with the 4.0L V6 from 2002 through 2010, including Explorer Sport and Sport Trac variants where applicable. Designed to open at approximately 197.6°F (92°C), the thermostat regulates coolant flow into the radiator so the engine warms efficiently and holds a stable temperature under typical driving conditions.

How does this housing kit fit my 2002–2010 Explorer or Mountaineer?

This assembly is manufactured to match the form and function of the referenced OE part numbers and mounts in the same location as the original housing. It’s compatible with a wide range of model years and trims that use the 4.0L V6 cooling setup, minimizing installation changes.

• Replaces OE numbers: 2L2Z8592AA, 2L2Z8592BA, 2L2Z8592BB, 6L2Z8592FA
• Fits: 2002–2010 Explorer (including Sport and Sport Trac where listed)
• Also fits: 2002–2010 Mercury Mountaineer with 4.0L V6
• Includes gasket and thermostat for a direct-swap installation

What are the temperature and performance specs I should know?

The thermostat inside this EVIL ENERGY kit is set to open at about 197.6°F (92°C), a common threshold for maintaining optimal engine operating temperature. By regulating coolant routing, the thermostat helps the engine get up to temperature quickly and avoid excessive hotspots.

• Opening temperature: 197.6°F / 92°C
• Plastic housing designed to match OEM fitment and mating surfaces
• Rubber gasket included to ensure a leak-resistant seal

What comes in the package and what does each part do?

The kit ships as a ready-to-install assembly, so you have the essential components to replace a worn or leaking thermostat housing. Each item in the package plays a defined role in restoring reliable coolant control and preventing leaks.

• Thermostat x1 — controls coolant flow based on temperature
• Rubber gasket x1 — provides a durable seal between housing and engine
• Plastic housing x1 — mounts the thermostat and connects coolant passages
• Nitrile gloves x1 — included for cleaner handling during installation

How will replacing the thermostat housing benefit my vehicle?

Installing a new housing and thermostat can reduce coolant leaks and help the engine maintain consistent temperature, which supports normal operation and longevity. While not a solution for all cooling-system issues, a fresh assembly removes a common failure point and restores proper coolant routing.

• Minimizes risk of external coolant leaks at the housing junction
• Helps engine reach and hold recommended operating temperature
• Replacement of worn gaskets lowers chances of seepage and corrosion

Who is this for: The EVIL ENERGY Thermostat Housing Kit is intended for owners and technicians of 2002–2010 Ford Explorer and Mercury Mountaineer vehicles equipped with the 4.0L V6 engine who need a direct-fit replacement for a cracked housing, leaking seal, or failed thermostat. It’s suitable for DIY mechanics comfortable with basic cooling-system service and professional shops performing routine or corrective engine-cooling repairs.