Dorman 902-2025 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Buick, Oldsmobile, Pontiac

The Dorman 902-2025 engine coolant thermostat housing is designed to provide a durable and precise fit for select Buick, Oldsmobile, and Pontiac models. Crafted from metal with a natural finish, this thermostat housing ensures proper coolant flow and engine temperature regulation.

• Constructed from durable metal material for long-lasting performance
• Natural color finish matching original equipment appearance
• Includes a gasket for a secure, leak-free seal
• Outlet port diameter of 1.25 inches for proper coolant flow
• Single mounting hole with 0.313-inch diameter for accurate installation
• Housing neck angle of 180 degrees to match OEM specifications
• Compatible with Buick, Oldsmobile, and Pontiac models including 98, Bonneville, Delta 88, LeSabre, Reatta, Riviera, and Toronado

Product Details and Specifications

The Dorman 902-2025 thermostat housing is engineered to meet the exact fitment requirements of various GM vehicles. Its metal construction offers strength and resistance to heat and corrosion, essential for maintaining engine cooling system integrity. The included gasket ensures a tight seal between the housing and engine block, preventing coolant leaks. The 1.25-inch outlet port diameter supports efficient coolant circulation, while the 180-degree housing neck angle aligns with factory design for proper hose connection. This part does not include the thermostat or mounting bolts, and no O-rings are required for installation.

Compatible Vehicle Applications

This thermostat housing is compatible with multiple Buick, Oldsmobile, and Pontiac models, specifically:

• Buick 98
• Buick LeSabre
• Oldsmobile Delta 88
• Oldsmobile Reatta
• Pontiac Bonneville
• Pontiac Riviera
• Pontiac Toronado

Common Issues Addressed by This Thermostat Housing

• Coolant leaks caused by cracked or damaged thermostat housing
• Engine overheating due to improper coolant flow
• Corrosion or wear compromising the housing seal
• Loose or misaligned thermostat housing connections
• Replacement of worn or faulty OEM thermostat housings

Installation Notes and Tips

Before installation, ensure the engine is cool and the cooling system is depressurized. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly to ensure a proper seal with the included gasket. Align the housing using the single mounting hole and torque bolts to manufacturer specifications (bolts not included). Verify the 180-degree neck angle matches the hose connection to prevent leaks or hose kinks.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-2025 thermostat housing undergoes rigorous quality control to ensure durability and reliable performance. This part includes a gasket for installation but does not come with a thermostat or mounting bolts. Warranty coverage details can be obtained from the product documentation or Dorman directly.