Dorman 902-2800 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly

The Dorman 902-2800 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for select Buick, Chevrolet, GMC, Oldsmobile, and Saab models. This assembly includes a thermostat calibrated to open at 160 degrees Fahrenheit, ensuring efficient coolant flow and engine performance.

• Constructed from durable aluminum with a natural finish for corrosion resistance
• Includes thermostat and O-ring gasket for a complete installation
• Designed with a 1.068-inch inside diameter outlet port for precise coolant flow
• Features two mounting holes with a bolt hole center-to-center distance of 2.888 inches
• Flange dimensions: 3.841 inches length, 3.847 inches width, and 0.36 inches thickness
• Compatible with multiple models including Buick Rainier, Chevrolet Trailblazer, GMC Envoy, Oldsmobile Bravada, and Saab 9-7x

Product Details and Specifications

This thermostat housing assembly from Dorman is engineered to meet the specifications required for proper engine cooling system operation. The aluminum construction offers strength and heat dissipation, while the included thermostat opens at 160 degrees Fahrenheit to regulate coolant flow effectively. The O-ring gasket ensures a secure seal to prevent leaks. Note that mounting hardware is not included, so existing bolts should be reused or sourced separately.

Compatible Vehicles and Applications

This Dorman 902-2800 thermostat housing assembly is compatible with a range of vehicles, including Buick Rainier, Chevrolet Blazer, GMC Envoy and Envoy XL, Oldsmobile Bravada, and Saab 9-7x. It is suitable for models such as the Trailblazer, Trailblazer EXT, and Envoy XUV, providing a direct replacement for the original equipment part.

Common Issues Addressed by This Thermostat Housing Assembly

• Engine overheating due to thermostat failure
• Coolant leaks from damaged or worn housing seals
• Irregular engine temperature fluctuations
• Corrosion or cracking in the original thermostat housing
• Reduced engine efficiency caused by improper coolant flow

Installation Notes and Tips

Before installation, ensure the engine is cool and the cooling system is depressurized. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly to ensure a proper seal with the included O-ring gasket. Since mounting hardware is not included, inspect existing bolts for wear and replace if necessary. Torque bolts to manufacturer specifications to prevent leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-2800 thermostat housing assembly undergoes rigorous quality checks to ensure durability and reliable performance. This product includes a gasket and thermostat to provide a complete solution for your cooling system needs. Warranty details are available through Dorman and typically cover defects in material and workmanship.