Dorman 902-2981 Engine Coolant Thermostat Housing Assembly - Water Pump

Reliable Engine Coolant Thermostat Housing Assembly

The Dorman 902-2981 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for a range of GM vehicles. Crafted from durable aluminum with a natural finish, this assembly includes a thermostat and gasket to ensure a secure and efficient cooling system operation.

• Constructed from corrosion-resistant aluminum material
• Includes thermostat opening at 185 degrees Fahrenheit for precise temperature control
• Comes with a gasket and seal for leak-free installation
• Features two mounting holes with a 3.07-inch bolt hole center-to-center spacing
• Compatible with multiple GM makes and models including Chevrolet Silverado, GMC Sierra, Cadillac Escalade, and more

Detailed Product Features and Specifications

This thermostat housing assembly features a 2.375-inch inside diameter and a single outlet port, designed to fit specific GM vehicles such as the Chevrolet Avalanche, GMC Canyon, and Cadillac Escalade. The flange measures 3.7 inches in length, 2.83 inches in width, and 0.32 inches in thickness, providing a precise fit for reliable sealing and mounting. The package includes one thermostat housing, one thermostat, and one seal, but mounting hardware is not included. The thermostat opens at 185 degrees Fahrenheit, helping regulate engine temperature effectively to prevent overheating or inefficient cooling.

Compatible Vehicles and Applications

This Dorman 902-2981 thermostat housing assembly is compatible with a wide range of GM vehicles, including Buick, Cadillac, Chevrolet, GMC, Hummer, and Saab models. Notable compatible models include the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade ESV, Hummer H3, and Saab 9-7x. This part is ideal for owners seeking a direct replacement for their engine coolant thermostat housing assembly to maintain proper engine temperature and cooling system performance.

• Prevents engine overheating by regulating coolant flow
• Replaces cracked or leaking thermostat housings
• Resolves coolant leaks caused by worn seals or gaskets
• Restores proper thermostat function to improve engine efficiency
• Eliminates erratic temperature gauge readings

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid injury. Remove the old thermostat housing carefully, cleaning the mounting surface thoroughly to remove any debris or old gasket material. Use the included gasket and seal to prevent leaks, but note that mounting hardware is not included and must be reused or replaced separately. Torque mounting bolts to manufacturer specifications to avoid warping the aluminum housing. Verify proper thermostat operation after installation by monitoring engine temperature during initial startup and operation.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-2981 thermostat housing assembly undergoes rigorous quality control to ensure durability and reliable performance. This product includes a gasket and thermostat to provide a complete solution for engine cooling system maintenance. Warranty coverage details can be obtained from the product documentation or manufacturer directly.