Dorman 902-5020 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-5020

The Dorman 902-5020 engine coolant thermostat housing is designed specifically for Mazda B2000 and B2200 models. Constructed from durable metal with a natural finish, this thermostat housing ensures reliable performance and proper engine temperature regulation.

• Material: Metal construction for durability
• Color: Natural metal finish
• Outlet port diameter: 1.313 inches
• Includes gasket for secure sealing
• Two mounting holes with 0.313 inch diameter each
• Housing neck angle: 45 degrees for precise fitment
• Thermostat not included
• No bolts or air vent (bleeder valve) included

Detailed Product Description

This Dorman engine coolant thermostat housing (part number 902-5020) is engineered to meet the specifications of Mazda B2000 and B2200 vehicles. The metal construction provides strength and resistance to heat and corrosion, essential for maintaining the integrity of the cooling system. The natural finish allows for easy inspection and compatibility with OEM components. The housing features a 1.313-inch outlet port diameter and a 45-degree neck angle, ensuring proper coolant flow and fitment. Included with the housing is a gasket to create a tight seal and prevent leaks. The housing mounts securely with two holes, each 0.313 inches in diameter, matching factory mounting points. Note that this part does not include the thermostat or mounting bolts, so those components must be sourced separately.

Compatible Vehicles and Applications

This thermostat housing is compatible with the following Mazda models:

• Mazda B2000
• Mazda B2200

It is designed to replace the original thermostat housing in these vehicles, restoring proper coolant flow and engine temperature regulation.

Common Issues Addressed by This Thermostat Housing

• Coolant leaks caused by cracked or damaged thermostat housing
• Overheating due to improper coolant flow
• Corrosion or wear compromising the housing seal
• Loose or broken mounting points affecting housing stability
• Replacement of worn or missing gaskets to prevent leaks

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Remove old thermostat housing and clean mounting surface thoroughly
• Use the included gasket to ensure a proper seal and prevent leaks
• Verify mounting hole alignment and torque bolts to manufacturer specifications (bolts not included)
• Check coolant levels and refill as necessary after installation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5020 thermostat housing undergoes quality inspections to ensure durability and reliable performance in Mazda B2000 and B2200 vehicles. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation for exact warranty terms.