MILIPARTS Aluminum Thermostat Housing for Ford Explorer & Mercury Mountaineer V6 4.0L (2002–2010) — Direct-Fit Corrosion-Resistant

If your vehicle’s coolant outlet is cracked, leaking, or showing signs of wear, this MILIPARTS thermostat housing offers a precision-engineered aluminum replacement built to OEM standards. Designed to match the original mounting points and coolant passages, it restores a secure seal between the engine and radiator hoses while resisting corrosion better than many die-cast or plastic alternatives.

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

The housing is manufactured to the same dimensions and bolt pattern as the factory unit so it installs without modification on compatible V6 4.0L engines. It replaces part numbers 2L2Z8592AA, 2L2Z8592BA, and 2L2Z8592BB, ensuring part-number compatibility for the listed model years.

• Direct-replacement design for specified model years and engines
• Matches factory mounting points and coolant passage geometry
• Works with original thermostat and housing gasket locations

What materials and quality features does the MILIPARTS housing provide?

This housing is crafted from upgraded aluminum and produced to meet OEM-style material and safety standards. Aluminum construction improves heat dissipation and reduces the long‑term risk of cracking compared with many plastic housings.

• High-grade aluminum body for corrosion resistance
• Precision-machined mating surfaces for a reliable seal
• Manufactured under MILIPARTS quality control procedures

Can I install this myself and what should I expect during replacement?

Many DIYers can swap the thermostat housing with basic hand tools, but follow a service manual or torque specs to avoid leaks. Replace the gasket or O-ring and refill the cooling system; always bleed trapped air per the vehicle’s procedure to prevent overheating.

• Typically requires standard sockets, torque wrench, and coolant catch pan
• Replace gasket/seal and use correct torque on mounting bolts
• Flush and refill coolant; bleed system to remove air pockets

How does MILIPARTS support customers after purchase?

MILIPARTS offers customer service to assist with fitment questions and post-sale support. If you’re unsure about compatibility, provide your vehicle VIN or exact model-year details to confirm fit before installation.

• 24/7 customer support available for fitment and product questions
• Clear replacement numbers listed to verify compatibility
• Advice on installation steps and recommended replacement parts

Who is this for: This upgraded aluminum thermostat housing is intended for owners and technicians working on 2002–2010 Ford Explorer, 2007–2010 Explorer Sport Trac, and 2002–2010 Mercury Mountaineer vehicles with the 4.0L V6. It’s a practical option for anyone replacing a leaking, cracked, or aged coolant outlet who wants an OEM-style fit, improved material durability, and straightforward installation. Always confirm your vehicle’s model year and engine code before ordering to ensure correct fitment.