Dorman 902-5931 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Toyota Prius

The Dorman 902-5931 engine coolant thermostat housing is designed specifically for Toyota Prius models, providing a durable and precise fit. Crafted from high-quality black plastic, this thermostat housing ensures efficient coolant flow and engine temperature regulation.

Key Features of Dorman 902-5931 Thermostat Housing

• Constructed from durable black plastic for corrosion resistance
• Outlet port diameter of 1.28 inches for optimal coolant flow
• Two mounting holes with 0.28-inch diameter for secure installation
• 50-degree housing neck angle designed for exact fitment
• Includes thermostat housing only; thermostat and bolts are not included
• No air vent (bleeder valve) or gasket included, compatible with existing seals

Detailed Description of the Thermostat Housing

This Dorman engine coolant thermostat housing (part number 902-5931) is engineered to meet the specifications of Toyota Prius vehicles. The black plastic material offers resistance to heat and corrosion, extending the life of the component. The housing features a 1.28-inch outlet port diameter and a 50-degree neck angle, ensuring proper coolant routing and compatibility with the Prius cooling system. With two mounting holes sized at 0.28 inches, installation is straightforward and secure. This part does not include a thermostat or mounting bolts, allowing you to reuse existing components or select replacements as needed.

Common Applications and Issues Addressed

• Replacement for cracked or leaking thermostat housing in Toyota Prius
• Prevents coolant leaks that can lead to engine overheating
• Restores proper coolant flow and temperature regulation
• Addresses housing damage caused by wear or impact
• Ensures compatibility with factory cooling system components

Installation Notes and Tips

• Verify compatibility with your specific Toyota Prius model year before installation
• Inspect and replace gaskets or seals as needed since none are included
• Use appropriate torque specifications on mounting bolts to avoid damage
• Ensure the housing neck angle aligns correctly with coolant hoses
• Check for leaks after installation and during initial engine operation

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 902-5931 thermostat housing undergoes quality checks to ensure durability and performance in Toyota Prius cooling systems. While no specific warranty details are provided here, Dorman typically offers limited warranties on their replacement parts. Consult product documentation or the manufacturer for exact warranty terms.