Stant 15259 Engine Coolant Thermostat / Water Outlet Assembly

Reliable Cooling with Stant Integrated Thermostat Housing

The Stant Integrated Thermostat Housing 15259 is designed to maintain optimal engine temperature for Ford and Mercury vehicles. Engineered for precise fitment on Explorer, Mountaineer, and Ranger models, this thermostat housing ensures consistent coolant flow and temperature regulation.

• Bypass plate diameter: 1.69 inches for efficient coolant circulation
• Flange diameter (without seal): 2.629 inches for secure mounting
• Height from flange to bottom: 1 inch for proper alignment
• Height from flange to top of bridge: 0.78 inches for compact design
• Thermostat temperature rating: 198 degrees Fahrenheit for accurate engine temperature control

Product Line: Integrated Thermostat Housing

The Stant Integrated Thermostat Housing line combines the thermostat and water outlet assembly into a single unit, simplifying installation and reducing potential leak points. This design enhances reliability and streamlines maintenance for compatible Ford and Mercury vehicles, including the Explorer, Mountaineer, and Ranger. Part number 15259 belongs to this line, offering a precise fit and consistent performance.

Detailed Product Description

This engine coolant thermostat and water outlet assembly is engineered to meet the exact specifications required by Ford and Mercury vehicles. The 198-degree Fahrenheit thermostat ensures the engine reaches and maintains optimal operating temperature, improving fuel efficiency and reducing emissions. The housing’s flange diameter of 2.629 inches and bypass plate diameter of 1.69 inches provide a secure and leak-resistant connection. With a height of 1 inch from flange to bottom and 0.78 inches to the top of the bridge, the part fits precisely within the engine bay, maintaining proper coolant flow and system pressure.

Common Applications and Problem Solving

• Prevents engine overheating by regulating coolant flow
• Replaces worn or damaged thermostat housings causing leaks
• Restores proper engine temperature control for Ford Explorer, Mercury Mountaineer, and Ford Ranger
• Eliminates coolant bypass issues with integrated bypass plate
• Addresses thermostat failure symptoms such as poor heater performance or engine running too hot or cold

Installation Notes and Tips

• Ensure engine is cool before removal to avoid burns
• Clean mounting surfaces thoroughly to prevent leaks
• Use new gaskets or seals as recommended for a secure fit
• Torque bolts to manufacturer specifications to avoid warping
• Check coolant levels and bleed air from the system after installation

Quality Assurance and Warranty

Stant parts are manufactured to meet or exceed OEM standards, ensuring durability and reliable performance. The Integrated Thermostat Housing 15259 undergoes rigorous quality control to provide consistent temperature regulation and leak-free operation. While specific warranty details may vary, Stant typically offers coverage against defects in materials and workmanship.