Dorman 902-2085 Engine Coolant Thermostat Housing - Outer

Reliable Engine Coolant Thermostat Housing for Chevrolet, Oldsmobile, and Pontiac

The Dorman 902-2085 engine coolant thermostat housing is designed to provide a durable and precise fit for select Chevrolet, Oldsmobile, and Pontiac models. Crafted from aluminum, this thermostat housing offers reliable heat dissipation and corrosion resistance to maintain optimal engine temperature control.

• Constructed from natural aluminum for strength and heat resistance
• Compatible with Chevrolet Alero, Cavalier, Classic, Oldsmobile Alero, and Pontiac Grand Am, Sunfire
• Outlet port diameter of 2.4 inches and inlet port diameter of 1.23 inches
• Five mounting holes with varied bolt hole center distances for secure installation
• Flange thickness of 0.77 inches ensures a proper seal (gasket not included)

Durable Aluminum Construction and Precise Fitment

The Dorman 902-2085 thermostat housing is engineered from natural aluminum, providing excellent durability and resistance to corrosion under high-temperature conditions. Its design includes five mounting holes with bolt hole center-to-center measurements ranging from 2.3 to 3.16 inches, ensuring a secure and accurate fit on compatible vehicles. The housing features an outlet port diameter of 2.4 inches and an inlet port diameter of 1.23 inches, matching OEM specifications for proper coolant flow. With a flange thickness of 0.77 inches, this housing supports a reliable seal when paired with the appropriate gasket (sold separately).

Compatible Vehicles and Applications

This engine coolant thermostat housing is compatible with several GM models, including Chevrolet Alero, Cavalier, Classic, Oldsmobile Alero, and Pontiac Grand Am and Sunfire. It is designed to replace worn or damaged thermostat housings that can cause coolant leaks or engine overheating.

• Prevents coolant leaks caused by cracked or warped housings
• Restores proper coolant flow to maintain engine temperature
• Eliminates overheating issues related to thermostat housing failure
• Supports engine cooling system integrity for reliable performance

Installation Notes and Tips

When installing the Dorman 902-2085 thermostat housing, ensure the mating surfaces are clean and free of old gasket material. Since this housing does not include a gasket or O-rings, use a compatible gasket designed for your vehicle model. Tighten mounting bolts evenly to the manufacturer’s torque specifications to avoid warping the aluminum flange. Verify coolant levels and check for leaks after installation.

Quality Assurance and Warranty

Dorman manufactures this thermostat housing to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides long-lasting durability under normal operating conditions. While the product does not include a thermostat or gasket, it is backed by Dorman’s quality assurance processes. Please refer to Dorman’s warranty policy for specific coverage details.