Dorman 902-1040 Engine Coolant Thermostat Housing - Upper

Overview of Dorman Engine Coolant Thermostat Housing 902-1040

The Dorman 902-1040 engine coolant thermostat housing is designed for reliable cooling system performance in Ford Ranger and Mazda B3000 models. Constructed from durable metal with a natural finish, this thermostat housing includes a gasket for a secure seal and precise fitment.

• Material: Metal construction for durability and heat resistance
• Color: Natural metal finish
• Outlet port diameter: 1.438 inches for proper coolant flow
• Includes gasket for leak prevention
• Mounting holes: 2 holes with 0.313 inch diameter for secure installation
• Housing neck angle: 45 degrees to match OEM specifications
• Compatible with Ford Ranger and Mazda B3000 models
• Part number: 902-1040

Detailed Product Description

This Dorman engine coolant thermostat housing (part number 902-1040) is engineered to meet the exact specifications required for Ford Ranger and Mazda B3000 vehicles. The metal construction ensures resistance to heat and corrosion, maintaining the integrity of the cooling system. The included gasket provides a tight seal between the housing and engine block, preventing coolant leaks. The housing features two mounting holes with a diameter of 0.313 inches, allowing for secure attachment. The outlet port diameter of 1.438 inches supports efficient coolant flow, while the 45-degree housing neck angle aligns with factory design for proper hose connection. This thermostat housing does not include the thermostat or bolts, so those components must be sourced separately.

Common Applications and Issues Addressed

• Replacement of cracked or damaged thermostat housing in Ford Ranger and Mazda B3000
• Prevention of coolant leaks caused by worn or failed housing gaskets
• Restoration of proper coolant flow to avoid engine overheating
• Repair of coolant system components after corrosion or physical damage
• Maintenance of cooling system integrity for reliable engine temperature regulation

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Remove old thermostat housing carefully to prevent damage to mounting surfaces
• Use the included gasket to create a proper seal; do not reuse old gaskets
• Torque mounting bolts to manufacturer specifications (bolts not included)
• Inspect surrounding hoses and connections for wear during installation

Quality Assurance and Warranty

Dorman manufactures this engine coolant thermostat housing to meet or exceed OEM standards for fit, form, and function. The metal construction and precise dimensions ensure durability and reliable performance in Ford Ranger and Mazda B3000 vehicles. This part is backed by Dorman's limited warranty against defects in material and workmanship, providing confidence in its long-term use.