Dorman 902-106 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-106

The Dorman 902-106 engine coolant thermostat housing is designed for reliable cooling system performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. This thermostat housing is engineered to meet OEM specifications and includes essential seals and gaskets for a secure fit.

• Constructed from durable black plastic material
• Includes water outlet, water outlet o-ring, and air bleeder pipe gasket
• Features a 1.293-inch outlet port diameter for precise coolant flow
• Equipped with two mounting holes, each 0.353 inches in diameter
• Incorporates an air vent (bleeder valve) to prevent air pockets
• Housing neck angle set at 75 degrees for proper hose alignment
• O-rings included for leak prevention
• Thermostat not included

Detailed Product Description

The Dorman 902-106 engine coolant thermostat housing is a critical component for maintaining optimal engine temperature in vehicles such as the Buick Achieva, Chevrolet Cavalier, Oldsmobile Skylark, Pontiac Grand Am, and Pontiac Sunfire. Made from high-quality black plastic, this housing offers corrosion resistance and durability under typical engine operating conditions. The 1.293-inch outlet port diameter ensures compatibility with factory coolant hoses, while the included o-rings and gaskets provide a tight seal to prevent leaks. The integrated air vent (bleeder valve) helps eliminate trapped air in the cooling system, improving coolant circulation and engine efficiency. With two mounting holes sized at 0.353 inches, installation aligns with OEM mounting points, and the 75-degree housing neck angle facilitates proper hose routing.

Compatible Vehicles and Applications

• Buick Achieva engine coolant thermostat housing replacement
• Chevrolet Cavalier cooling system thermostat housing part
• Oldsmobile Skylark thermostat housing for engine coolant
• Pontiac Grand Am and Sunfire compatible thermostat housing

Common Issues Addressed by This Thermostat Housing

• Coolant leaks caused by cracked or damaged thermostat housing
• Overheating due to improper coolant flow or air pockets
• Corrosion and wear from prolonged exposure to engine heat and fluids
• Loose or damaged seals leading to coolant loss
• Misaligned hose connections affecting cooling system efficiency

Installation Notes and Tips

When installing the Dorman 902-106 thermostat housing, ensure the engine is cool before beginning work. Remove the old housing carefully to avoid damaging surrounding components. Use the included o-rings and gaskets to create a proper seal and prevent leaks. Verify that the air vent (bleeder valve) is unobstructed to allow trapped air to escape. Tighten mounting bolts evenly to the manufacturer’s torque specifications. Note that bolts are not included with this part and must be reused or sourced separately.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-106 thermostat housing undergoes quality inspections to ensure durability and performance. This part includes necessary seals and gaskets to support a reliable installation. Warranty coverage details can be obtained from the product documentation or Dorman’s official resources.