Dorman 902-816 Engine Coolant Thermostat Housing Assembly

Overview of Dorman Engine Coolant Thermostat Housing Assembly

The Dorman 902-816 Engine Coolant Thermostat Housing Assembly is designed for precise temperature regulation in BMW vehicles. This complete assembly includes a thermostat calibrated to open at 207°F, ensuring optimal engine performance and efficient cooling.

• Material: Durable black plastic construction
• Includes thermostat with 207°F opening temperature
• Complete thermostat housing assembly package
• Four outlet ports for versatile coolant flow
• Compatible with multiple BMW models including 1 Series M, 3 Series, 5 Series, X1, X3, and Z4

Detailed Product Description

The Dorman 902-816 thermostat housing assembly is engineered from high-quality plastic to resist corrosion and withstand engine heat cycles. It features four outlet ports to accommodate complex coolant routing in BMW engines. The included thermostat opens at 207 degrees Fahrenheit, a temperature optimized for maintaining engine operating temperature and preventing overheating. This assembly does not include mounting hardware or a gasket, so ensure these components are available during installation. The black finish provides a clean, factory-style appearance.

Compatible BMW Models and Applications

This thermostat housing assembly is compatible with a wide range of BMW vehicles, including the 1 Series M, 125i, 128i, 130i, 135i; 3 Series models such as 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, 335i, 335is, 335i xDrive, 335xi; 5 Series models including 525i, 525xi, 528i, 528i xDrive, 528xi, 530i, 530xi, 535i, 535i xDrive, 535xi; as well as the X1, X3, and Z4. This ensures precise fitment and reliable operation for these specific BMW models.

Common Issues Addressed by This Thermostat Housing Assembly

• Engine overheating due to thermostat failure
• Coolant leaks from cracked or damaged housing
• Erratic engine temperature readings
• Reduced engine efficiency from improper coolant flow
• Premature engine wear caused by inconsistent temperature regulation

Installation Notes and Tips

When installing the Dorman 902-816 thermostat housing assembly, verify that the mounting surface is clean and free of old gasket material. Since mounting hardware and gasket are not included, use OEM or compatible parts to ensure a proper seal. Tighten bolts to manufacturer specifications to avoid leaks or damage. Bleeding the cooling system after installation is recommended to remove air pockets and ensure optimal coolant circulation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-816 thermostat housing assembly undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.