Dorman 902-2131 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly

The Dorman 902-2131 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 180 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 secure seal
• Designed with two mounting holes spaced 3.15 inches apart for precise fitment
• Flange dimensions: 3.82 inches length, 2.8 inches width, and 0.355 inches thickness
• Compatible with multiple models including Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x

Product Features and Specifications

This thermostat housing assembly features a 1.1-inch inside diameter outlet port and is engineered without a bleeder hole. The included thermostat opens at 180°F, helping regulate engine temperature effectively. The O-ring gasket ensures a tight seal to prevent coolant leaks. Note that mounting hardware is not included, so existing bolts should be reused or sourced separately.

Compatible Vehicles and Applications

This Dorman 902-2131 part is compatible with a range of vehicles, including Buick Rainier, Chevrolet Blazer, Bravada, GMC Envoy, Envoy XL, Envoy XUV, Oldsmobile Trailblazer, Trailblazer EXT, and Saab 9-7x. It is designed to replace the original thermostat housing assembly in these models, restoring proper coolant flow and temperature regulation.

• Prevents engine overheating by regulating coolant flow
• Resolves coolant leaks caused by damaged or warped housings
• Eliminates thermostat failure issues affecting engine temperature control
• Addresses coolant circulation problems in Buick, Chevrolet, GMC, Oldsmobile, and Saab vehicles

Installation Notes and Tips

When installing the Dorman 902-2131 thermostat housing assembly, ensure the mating surfaces are clean and free of old gasket material. Use the included O-ring gasket to achieve a proper seal. Since mounting hardware is not included, verify that existing bolts are in good condition or replace them as needed. Torque bolts to manufacturer specifications to avoid leaks or damage.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-2131 thermostat housing assembly is made from corrosion-resistant aluminum to provide long-lasting durability. This product includes a thermostat and gasket to ensure reliable operation. Warranty coverage details can be obtained from the product documentation or Dorman directly.