Dorman 902-5216 Engine Coolant Thermostat Housing Assembly - Outer

Reliable Engine Coolant Thermostat Housing Assembly for Lexus and Toyota

The Dorman 902-5216 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for select Lexus and Toyota models. This assembly includes a thermostat calibrated to open at 189 degrees Fahrenheit, ensuring efficient coolant flow and engine performance.

Key Features of the Dorman 902-5216 Thermostat Housing

• Constructed from durable black plastic for corrosion resistance
• Includes one thermostat housing and one thermostat with a 189°F opening temperature
• Features two outlet ports and four mounting holes with a 2.83-inch bolt hole center-to-center spacing
• Comes with a gasket to ensure a secure, leak-free seal
• Flange dimensions: 3.25 inches in length and width, with a thickness of 0.4 inches
• Inside diameter measures 2.08 inches for proper coolant flow

Detailed Product Description

This engine coolant thermostat housing assembly from Dorman is engineered to meet the cooling system requirements of Lexus and Toyota vehicles, including Avalon, Camry, Highlander, RX350, RX350L, and Sienna models. The plastic housing offers resistance to corrosion and heat, while the included thermostat opens at 189 degrees Fahrenheit to regulate coolant circulation effectively. The assembly features two outlet ports to accommodate coolant flow and four mounting holes for secure installation. A gasket is included to prevent leaks and maintain system integrity. The precise flange dimensions and bolt hole spacing ensure compatibility with the specified vehicle models.

Common Applications and Issues Addressed

• Replacement of cracked or leaking thermostat housing
• Resolving engine overheating due to thermostat failure
• Fixing coolant leaks around the thermostat housing area
• Maintaining proper engine temperature regulation in Lexus Avalon and Toyota Camry
• Ensuring reliable coolant flow in Toyota Highlander and RX350 cooling systems

Installation Notes and Tips

• Verify compatibility with your vehicle’s make, model, and year before installation
• Ensure the engine is cool before removing the old thermostat housing
• Clean the mounting surface thoroughly to prevent gasket leaks
• Use the included gasket for a proper seal; mounting hardware is not included
• Tighten mounting bolts evenly to the manufacturer’s torque specifications

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5216 thermostat housing assembly undergoes rigorous quality checks to ensure durability and reliable performance. While specific warranty details are not provided, Dorman typically offers limited warranties on their replacement parts to cover defects in material and workmanship.