Stant 15249 Engine Coolant Thermostat / Water Outlet Assembly

Integrated Thermostat Housing for Ford and Mercury

The Stant 15249 integrated thermostat housing combines the thermostat and water outlet housing into one assembly for a cleaner, more direct replacement. Built from durable material and set to 198 degrees F, it is a practical choice for maintaining proper engine coolant flow in Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer applications.

Stant’s Integrated Thermostat Housing line focuses on simplifying service by integrating the thermostat into the housing assembly. For vehicles that use a clip-in style sensor, this design helps reduce separate part handling during replacement while keeping the cooling system service straightforward.

Key Features

• Part number 15249 integrated thermostat housing assembly
• Thermostat set to 198 degrees F
• Durable housing material for long service life
• Integrated thermostat and water outlet design
• Seal included for the listed applications
• For 1 clip-in style sensor
• Bypass plate diameter: 1.69 in
• Flange diameter without seal: 2.629 in
• Height from flange to bottom: 1 in
• Height from flange to top of bridge: 0.78 in

Detailed Description

The Stant 15249 is an engine coolant thermostat and water outlet assembly built for select Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer models. Its integrated design places the thermostat inside the housing, which streamlines replacement and helps match the original cooling system layout on covered vehicles. The 198-degree thermostat specification supports normal operating temperature control for the listed applications, while the durable housing construction is intended for long-term service in the cooling system.

Fits 2001-2010 Ford Explorer, N/A. Fits 2001-2005 Ford Explorer Sport Trac, N/A. Fits 2007-2010 Ford Explorer Sport Trac, N/A. Fits 2002-2010 Mercury Mountaineer, N/A. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Cooling System Repairs

• Cracked or leaking thermostat housing
• Incorrect engine operating temperature
• Coolant seepage at the water outlet area
• Service issues on a housing with an integrated thermostat
• Replacement needs on a clip-in style sensor housing

Installation Notes and Tips

Verify the vehicle uses a 198-degree thermostat specification and a 1 clip-in style sensor before installation. Inspect the sealing surfaces and confirm the flange dimensions match the original housing. Because the thermostat is integrated into the housing assembly, replacement is handled as a single cooling system service component rather than separate thermostat and housing pieces.

Quality Assurance

Stant manufactures cooling system components with an emphasis on fit and serviceability. The 15249 integrated thermostat housing is built as a direct-style replacement for the listed Ford and Mercury applications.