Four Seasons 85139A Engine Coolant Thermostat Housing

Reliable Thermostat Housing for Ford, Mazda, and Mercury Vehicles

The Four Seasons 85139A Thermostat Housing is designed to provide a durable and precise fit for select Ford, Mazda, and Mercury models. Engineered from thermoplastic material, this engine coolant thermostat housing ensures proper coolant flow and system integrity without including the thermostat itself.

Key Features of Four Seasons 85139A Thermostat Housing

• Constructed from durable thermoplastic for corrosion resistance
• Includes gasket or seal for secure installation
• Meets or exceeds OEM specifications for reliable performance
• Designed without thermostat for compatibility with existing components
• Asymmetrical base design for exact fitment
• Compatible with Ford B4000, Explorer, Explorer Sport, Explorer Sport Trac, Mountaineer, Mustang, and Ranger models

Detailed Description of the Thermostat Housing

This Four Seasons Thermostat Housing (part number 85139A) is a critical engine coolant component that helps regulate the flow of coolant through the engine. Made from high-quality thermoplastic, it offers resistance to heat and corrosion, extending the life of your cooling system. The housing comes with a gasket or seal included to ensure a leak-free installation. It is designed without a thermostat, allowing it to be used with your vehicle’s existing thermostat. The asymmetrical base ensures a precise fit, preventing misalignment and potential coolant leaks.

Applications and Common Issues Addressed

• Replacement for cracked or damaged thermostat housing
• Prevents coolant leaks that can cause engine overheating
• Restores proper coolant flow in Ford Explorer and Mustang cooling systems
• Addresses coolant system failures in Mazda B4000 and Mercury Mountaineer
• Ensures secure sealing to avoid engine performance issues related to coolant loss

Installation Notes and Tips

When installing the Four Seasons 85139A thermostat housing, ensure the engine is cool before beginning work. Remove the old housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly before placing the included gasket or seal. Tighten bolts to manufacturer torque specifications to prevent leaks. Since this housing does not include a thermostat, verify the condition of your existing thermostat during installation.

Quality Assurance and Warranty Information

Four Seasons thermostat housings meet or exceed OEM standards, providing dependable performance for your vehicle’s cooling system. The 85139A part is manufactured to strict quality controls to ensure durability and fitment accuracy. This product includes a gasket or seal to support a proper installation. Please refer to Four Seasons’ warranty policy for specific coverage details.

About the Four Seasons Thermostat Housing Product Line

The Four Seasons Thermostat Housing line offers a range of engine coolant components designed to match or surpass original equipment specifications. This product line focuses on providing reliable, thermoplastic housings that accommodate various vehicle makes and models, including Ford, Mazda, and Mercury. The housings are engineered to fit precisely and maintain the integrity of the cooling system, supporting efficient engine temperature regulation.