Dorman 902-756 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Chevrolet and GMC

The Dorman 902-756 engine coolant thermostat housing is designed to provide a durable and precise fit for various Chevrolet and GMC models. Crafted from metal with a natural finish, this thermostat housing ensures reliable performance and long-lasting service in your vehicle's cooling system.

• Constructed from durable metal material for strength and heat resistance
• Includes a gasket for a secure, leak-free seal
• Outlet port diameter of 1.31 inches for proper coolant flow
• Two mounting holes with 0.313-inch diameter for secure installation
• 45-degree housing neck angle to match OEM specifications
• Compatible with Chevrolet and GMC models including Astro, Blazer, C1500, Express 1500/2500, G30, Jimmy, K1500, P30, P3500, S10, Safari, Savana 1500/2500, and Sonoma

Durable Design and Precise Fitment

The Dorman 902-756 thermostat housing is engineered to meet or exceed OEM standards, featuring a metal construction that withstands high temperatures and pressure within the engine cooling system. The natural color finish maintains corrosion resistance while blending seamlessly with your vehicle’s engine components. This housing includes a pre-installed gasket to ensure a tight seal and prevent coolant leaks. With two mounting holes sized at 0.313 inches and a 45-degree neck angle, it aligns accurately with the cooling system plumbing on compatible Chevrolet and GMC trucks and SUVs.

Compatible Chevrolet and GMC Models

This thermostat housing is specifically designed for use with Chevrolet and GMC vehicles such as the Astro, Blazer, C1500, Express 1500 and 2500, G30, Jimmy, K1500, P30, P3500, S10, Safari, Savana 1500 and 2500, and Sonoma. The precise outlet port diameter of 1.31 inches ensures proper coolant flow and system efficiency in these models.

Common Applications and Problem Resolution

• Replacement for cracked or leaking thermostat housings
• Fixes coolant leaks caused by worn or damaged seals
• Restores proper coolant flow and engine temperature regulation
• Addresses overheating issues related to faulty thermostat housing
• Prevents coolant contamination and engine damage

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 two mounting holes and torque bolts to manufacturer specifications (bolts not included). Verify the 45-degree neck angle matches your vehicle’s cooling system layout. After installation, refill the cooling system and check for leaks during engine warm-up.

Quality Assurance and Warranty

Dorman manufactures the 902-756 thermostat housing to meet strict quality standards, ensuring reliable performance and durability. The product includes a gasket for proper sealing but does not include bolts or a thermostat. While specific warranty details are not provided, Dorman parts typically come with a limited warranty against defects in material and workmanship. Consult Dorman’s warranty policy for complete information.