Dorman 902-5004 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-5004

The Dorman 902-5004 engine coolant thermostat housing is designed for reliable cooling system performance in Nissan vehicles. Specifically compatible with Nissan 240SX, D21, and Pickup models, this metal thermostat housing ensures proper coolant flow and engine temperature regulation.

• Constructed from durable metal material for long-lasting use
• Natural color finish with a 1.375-inch outlet port diameter
• Includes gasket and O-rings for a secure, leak-free seal
• Features two mounting holes with 0.313-inch diameter for precise installation
• Housing neck angle set at 180 degrees for optimal coolant routing
• Does not include thermostat or mounting bolts

Detailed Product Description

The Dorman 902-5004 thermostat housing is engineered to meet the cooling system requirements of Nissan 240SX, D21, and Pickup models. Made from metal, it offers enhanced durability and resistance to heat and corrosion compared to plastic alternatives. The natural finish maintains the original equipment appearance while the 1.375-inch outlet port diameter ensures compatibility with factory hoses. This housing comes with a gasket and O-rings included, providing a reliable seal to prevent coolant leaks. The two mounting holes, each with a diameter of 0.313 inches, allow for secure attachment to the engine block. The 180-degree housing neck angle facilitates proper coolant flow direction within the cooling system. Note that this part does not include the thermostat or mounting bolts, so these components must be sourced separately.

Compatible Vehicles and Common Applications

• Replacement for thermostat housing on Nissan 240SX models
• Suitable for Nissan D21 trucks requiring a metal thermostat housing
• Compatible with Nissan Pickup vehicles for cooling system maintenance
• Addresses issues such as coolant leaks, overheating, and housing cracks
• Used when upgrading from plastic to metal thermostat housings for improved durability

Installation Notes and Tips

When installing the Dorman 902-5004 thermostat housing, ensure the engine is cool before beginning work. Remove the old housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly to ensure a proper seal with the included gasket and O-rings. Use the correct torque specifications for the two mounting bolts (not included) to prevent leaks or damage. Verify the housing neck angle aligns with the coolant hose routing to avoid kinks or flow restrictions. It is recommended to inspect the thermostat separately and replace it if necessary, as this housing does not include a thermostat.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5004 thermostat housing undergoes quality checks to ensure durability and reliable performance in Nissan 240SX, D21, and Pickup models. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.