Dorman 902-5023 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-5023

The Dorman 902-5023 engine coolant thermostat housing is designed for reliable cooling system performance in select Toyota vehicles. This metal thermostat housing offers a natural finish and is engineered to meet the specific requirements of Toyota 4Runner, T100, Tacoma, and Tundra models.

• Constructed from durable metal material for long-lasting use
• Natural color finish for corrosion resistance and OEM appearance
• Outlet port diameter of 1.833 inches for precise coolant flow
• Includes gasket or seal to ensure a secure, leak-free installation
• Two mounting holes with 0.313-inch diameter for proper fitment
• Housing neck angle of 180 degrees to match factory specifications
• Compatible with Toyota 4Runner, T100, Tacoma, and Tundra models
• Part number 902-5023 for accurate identification and replacement

Detailed Product Description

The Dorman 902-5023 engine coolant thermostat housing is a critical component in the cooling system of Toyota trucks and SUVs, including the 4Runner, T100, Tacoma, and Tundra. Manufactured from metal, this thermostat housing provides durability and resistance to heat and corrosion. The natural finish maintains the OEM look while protecting against environmental factors. The housing features a 1.833-inch outlet port diameter, ensuring proper coolant flow through the system. It includes a gasket or seal to prevent leaks and has two mounting holes sized at 0.313 inches in diameter for secure attachment. The 180-degree housing neck angle matches the original equipment design, facilitating straightforward installation without modifications. This thermostat housing does not include the thermostat or bolts, so those components must be sourced separately.

Common Applications and Issues Addressed

• Replacement for cracked or damaged thermostat housing in Toyota 4Runner, T100, Tacoma, and Tundra
• Prevents coolant leaks caused by worn or failing housing seals
• Restores proper coolant flow to avoid engine overheating
• Addresses corrosion-related failures in older metal housings
• Ensures correct fitment and alignment with factory cooling system components

Installation Notes and Tips

• Verify compatibility with your specific Toyota model and engine before installation
• Use the included gasket or seal to ensure a leak-free connection
• Torque mounting bolts to manufacturer specifications (bolts not included)
• Inspect the thermostat separately as it is not included with this housing
• Check coolant levels and system pressure after installation to confirm proper operation

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM standards for fit, form, and function. The 902-5023 thermostat housing undergoes rigorous quality control to ensure durability and reliable performance in Toyota 4Runner, T100, Tacoma, and Tundra vehicles. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or Dorman directly for exact warranty terms.