Dorman 902-5856 Engine Coolant Thermostat Housing - Engine Block

Overview of Dorman Engine Coolant Thermostat Housing 902-5856

The Dorman 902-5856 engine coolant thermostat housing is designed for reliable cooling system performance in select Scion, Subaru, and Toyota vehicles. Crafted from durable metal with a natural finish, this thermostat housing ensures a precise fit and long-lasting operation for models like the Subaru Forester, Toyota 86, and Scion FR-S.

• Constructed from sturdy metal material for durability
• Natural color finish for corrosion resistance
• 1.5-inch outlet port diameter for proper coolant flow
• Two mounting holes with 0.281-inch diameter each
• Mounting hole center-to-center distance of 2.9 inches
• 10-degree housing neck angle for accurate hose alignment
• Does not include thermostat, gasket, bolts, or O-rings
• Compatible with multiple Subaru, Toyota, and Scion models

Detailed Product Description

The Dorman 902-5856 engine coolant thermostat housing is engineered to meet the specifications required by various Subaru, Toyota, and Scion vehicles. Its metal construction provides strength and resistance to heat and pressure within the cooling system. The natural finish helps prevent corrosion over time, maintaining the integrity of the housing. The 1.5-inch outlet port diameter supports efficient coolant flow, while the 10-degree neck angle ensures proper hose connection and alignment. With two mounting holes spaced 2.9 inches apart center-to-center, installation aligns with factory mounting points for a secure fit. This housing does not include the thermostat, gasket, bolts, or O-rings, allowing for flexibility in replacement parts based on your vehicle’s needs.

Compatible Vehicles and Common Applications

• Subaru Forester, Impreza, Legacy, Outback, Crosstrek, XV, and BRZ
• Toyota 86 and FR-S models
• Scion FR-S and XV Crosstrek
• Replacement for worn or damaged thermostat housing in cooling systems
• Addresses coolant leaks, overheating, and improper thermostat seating

Installation Notes and Tips

• Ensure the engine is cool before beginning installation to avoid burns
• Inspect and replace the thermostat, gasket, and O-rings as needed since they are not included
• Use proper torque specifications on mounting bolts to prevent leaks or damage
• Verify hose alignment with the 10-degree neck angle for optimal fit
• Check for coolant leaks after installation and during initial engine operation

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5856 thermostat housing undergoes rigorous quality control to ensure durability and reliable performance in your vehicle’s cooling system. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.