Dorman 902-2081 Engine Coolant Thermostat Housing - Water Pump

Reliable Engine Coolant Thermostat Housing for GM Vehicles

The Dorman 902-2081 engine coolant thermostat housing is designed to provide a durable and precise fit for a range of GM vehicles including Buick, Cadillac, Chevrolet, GMC, Hummer, and Saab models. Crafted from metal with a natural finish, this thermostat housing ensures consistent performance in your vehicle's cooling system.

• Constructed from durable metal material for long-lasting use
• Natural color finish for corrosion resistance
• Outlet port diameter of 1.2 inches for proper coolant flow
• Height of 3.5 inches with a 25-degree housing neck angle
• Includes two mounting holes with 0.27-inch diameter and 3-inch bolt hole center spacing
• Flange thickness of 0.32 inches for secure mounting
• Does not include thermostat, gasket, bolts, or O-rings
• Compatible with multiple GM models such as Chevrolet Silverado, GMC Sierra, Cadillac Escalade, and more

Detailed Product Description

The Dorman 902-2081 engine coolant thermostat housing is engineered to meet the specifications required for proper engine cooling system operation. Its metal construction offers strength and resistance to heat and pressure, while the natural finish helps prevent corrosion over time. The housing features a 1.2-inch outlet port diameter and a 25-degree neck angle, designed to align precisely with the vehicle’s cooling system components. With two mounting holes spaced 3 inches apart and a flange thickness of 0.32 inches, this housing provides a secure and stable fit. Note that this part does not include the thermostat, gasket, bolts, or O-rings, so these components should be sourced separately during installation.

Compatible Vehicles and Common Applications

This thermostat housing is compatible with a wide range of GM vehicles, including but not limited to:

• Buick Rainier and 9-7x
• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche, Colorado, Corvette, Express 1500/2500/3500, Silverado 1500/2500/3500, Suburban 1500/2500/3500 HD, Tahoe, Trailblazer
• GMC Canyon, Cheyenne, Sierra 1500/2500/3500, Yukon, Yukon XL 1500/2500
• Hummer H2, H3, H3T
• Saab 9-7x

Common Issues Addressed by This Thermostat Housing

• Leaking or cracked thermostat housing causing coolant loss
• Overheating due to improper coolant flow
• Corrosion or damage from prolonged exposure to engine heat
• Loose or damaged mounting points affecting housing stability
• Replacement for worn or broken OEM thermostat housings

Installation Notes and Tips

When installing the Dorman 902-2081 thermostat housing, ensure the mounting surface is clean and free of old gasket material. Since this housing does not include a gasket or O-rings, use appropriate sealing components recommended for your specific vehicle model. Tighten mounting bolts evenly to the manufacturer’s torque specifications to avoid warping the flange. Verify the housing neck angle aligns correctly with the coolant hose to prevent leaks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-2081 thermostat housing undergoes rigorous quality control to ensure durability and reliable performance. While this product does not include a thermostat or sealing components, it is backed by Dorman’s limited warranty against defects in material and workmanship. Refer to Dorman’s warranty policy for specific coverage details.