Dorman 902-853 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Chevrolet and GMC

The Dorman 902-853 engine coolant thermostat housing is designed to provide a durable and precise fit for select Chevrolet and GMC vans and trucks. Crafted from aluminum with a silver finish, this thermostat housing ensures efficient heat dissipation and long-lasting performance for your vehicle's cooling system.

• Constructed from corrosion-resistant aluminum material
• Silver color finish for durability and corrosion resistance
• Outlet port diameter of 1.75 inches for proper coolant flow
• Includes one water outlet and one gasket for a complete installation
• Features three mounting holes with 0.438-inch diameter for secure attachment
• Housing neck angled at 90 degrees from base for precise fitment
• Compatible with Chevrolet and GMC G20, G30, P20, P30, P2500, and P3500 models

Product Details and Specifications

The Dorman 902-853 thermostat housing is engineered to meet the exact specifications required by Chevrolet and GMC vehicles including the G20, G30, P20, P30, P2500, and P3500 series. Its aluminum construction offers excellent resistance to heat and corrosion, which is critical for maintaining the integrity of the engine cooling system. The housing features a 1.75-inch outlet port diameter and a 90-degree neck angle from the base, ensuring proper coolant routing and compatibility with factory hoses. This part includes a gasket to help create a secure seal, but does not include bolts or a thermostat. The three mounting holes, each with a diameter of 0.438 inches, provide a stable and secure installation.

Common Applications and Problem Resolution

• Replacement for cracked or leaking thermostat housing
• Solves coolant leaks caused by corrosion or damage
• Prevents engine overheating due to faulty housing
• Restores proper coolant flow in Chevrolet and GMC vans and trucks
• Addresses issues related to worn or damaged gaskets

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. Use the original mounting bolts or equivalent hardware, as bolts are not included with this part. Verify the 90-degree neck angle aligns correctly with the coolant hoses on your Chevrolet or GMC vehicle. After installation, refill the cooling system and check for leaks during engine warm-up.

Quality Assurance and Warranty Information

Dorman manufactures the 902-853 thermostat housing to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides durability and resistance to corrosion, contributing to the longevity of the cooling system. This part is backed by Dorman's limited warranty, which covers defects in material and workmanship under normal use. For specific warranty details, refer to Dorman's official documentation.