Dorman 902-837 Engine Coolant Thermostat Housing - Outer or Upper

Overview of Dorman Engine Coolant Thermostat Housing 902-837

The Dorman 902-837 engine coolant thermostat housing is designed specifically for Nissan 200SX and Sentra models. Constructed from durable steel with a natural finish, this thermostat housing ensures reliable performance and proper coolant flow in your vehicle's engine cooling system.

• Material: Steel for enhanced durability and corrosion resistance
• Outlet port diameter: 1.25 inches for precise coolant flow
• Mounting holes: 3 holes with 0.313-inch diameter for secure installation
• Housing neck angle: 90 degrees from base to fit OEM specifications
• Package includes: 1 water outlet housing (thermostat, gasket, bolts, and O-rings not included)

Detailed Product Description

The Dorman 902-837 thermostat housing is engineered to meet the exact fitment requirements of Nissan 200SX and Sentra vehicles. Its steel construction provides strength and resistance to heat and corrosion, which are critical for maintaining the integrity of the engine cooling system. The natural color finish allows for easy inspection and compatibility with OEM components. The housing features a 90-degree neck angle from the base, aligning with factory specifications to ensure proper hose connection and coolant flow. With three mounting holes sized at 0.313 inches in diameter, this housing secures firmly to the engine block, maintaining a tight seal despite engine vibrations and thermal expansion.

Common Applications and Issues Addressed

• Replacement for cracked or leaking thermostat housings
• Prevents coolant leaks that can cause engine overheating
• Restores proper coolant flow to maintain engine temperature
• Addresses corrosion-related failures in older thermostat housings
• Ensures secure mounting to prevent coolant system pressure loss

Installation Notes and Tips

• Verify compatibility with Nissan 200SX and Sentra models before installation
• Use appropriate gasket or sealant as this housing does not include a gasket or O-rings
• Inspect mounting holes and bolts for wear; bolts are not included with this part
• Ensure the thermostat is installed separately as it is not included
• Tighten mounting bolts evenly to avoid warping the housing

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-837 thermostat housing undergoes rigorous quality control to ensure durability and reliable performance in Nissan 200SX and Sentra vehicles. While specific warranty details may vary, Dorman typically offers a limited warranty against defects in material and workmanship. Consult product documentation for exact warranty terms.