Dorman 902-2068 Engine Coolant Thermostat Housing - Upper

Overview of Dorman Engine Coolant Thermostat Housing 902-2068

The Dorman 902-2068 engine coolant thermostat housing is designed for reliable cooling system performance in Chevrolet and GMC heavy-duty trucks. This metal thermostat housing features a natural finish and includes a gasket for a secure seal, ensuring proper engine temperature regulation.

• Durable metal construction with natural color finish
• Includes gasket for leak-free installation
• Four mounting holes with 0.313 inch diameter for secure fitment
• 2-inch outlet port diameter compatible with factory cooling systems
• Equipped with an air vent (bleeder valve) to remove trapped air
• Thermostat not included, bolts not included
• Compatible with Chevrolet and GMC Sierra 2500 HD, Sierra 3500, Silverado 2500 HD, and Silverado 3500 models

Detailed Product Description

The Dorman 902-2068 engine coolant thermostat housing is engineered from metal to withstand the high temperatures and pressures of heavy-duty truck cooling systems. Its natural finish provides corrosion resistance and durability. The housing features a 2-inch outlet port diameter, matching OEM specifications for seamless integration with the vehicle’s cooling system. Four mounting holes, each with a diameter of 0.313 inches, ensure a secure and precise fit. An integrated air vent (bleeder valve) allows for efficient removal of trapped air, helping to maintain optimal coolant flow and prevent overheating. This thermostat housing comes with a gasket included to provide a tight seal and prevent coolant leaks. Note that the thermostat and mounting bolts are not included with this part.

Compatible Vehicles and Applications

This thermostat housing is compatible with select Chevrolet and GMC heavy-duty trucks, specifically:

• Chevrolet Sierra 2500 HD
• Chevrolet Sierra 3500
• GMC Sierra 2500 HD
• GMC Sierra 3500
• Chevrolet Silverado 2500 HD
• Chevrolet Silverado 3500

Common Issues Addressed by This Thermostat Housing

• Coolant leaks caused by cracked or damaged thermostat housing
• Overheating due to faulty or leaking housing
• Air trapped in the cooling system affecting temperature regulation
• Corrosion or wear compromising the housing’s integrity
• Improper fitment or seal failure with previous replacement parts

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Use the included gasket to prevent coolant leaks and ensure a proper seal
• Inspect mounting holes and clean mating surfaces before installation
• Replace mounting bolts if damaged or corroded, as bolts are not included
• Bleed the cooling system after installation to remove trapped air via the air vent

Quality Assurance and Warranty

Dorman manufactures this thermostat housing to meet or exceed OEM standards for fit, form, and function. The metal construction and included gasket contribute to long-lasting performance in demanding heavy-duty truck applications. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.