Dorman 902-5124 Engine Coolant Thermostat Housing

Overview of Dorman Engine Coolant Thermostat Housing 902-5124

The Dorman 902-5124 engine coolant thermostat housing is designed for reliable cooling system performance in select Lexus, Scion, and Toyota vehicles. This black plastic housing provides a precise fit for models including the Camry, Corolla, Highlander, HS250h, Matrix, RAV4, Solara, and xB.

• Durable black plastic construction for corrosion resistance
• Outlet port diameter of 1.5 inches for proper coolant flow
• Two mounting holes with 0.3125 inch diameter for secure installation
• 80-degree housing neck angle to match OEM specifications
• Includes thermostat housing only; thermostat and bolts not included

Detailed Product Description

The Dorman 902-5124 engine coolant thermostat housing is engineered to meet the exact specifications required by various Lexus, Scion, and Toyota models. Constructed from high-quality plastic, this housing resists corrosion and heat damage commonly found in engine cooling systems. The 1.5-inch outlet port diameter ensures efficient coolant flow, while the 80-degree neck angle aligns with factory design for seamless integration. With two mounting holes sized at 0.3125 inches, the housing secures firmly to the engine block, maintaining a tight seal without the need for additional O-rings or bleeder valves. This part is compatible with vehicles such as the Toyota Camry, Corolla, Highlander, HS250h, Matrix, RAV4, Solara, and the Scion xB, making it a suitable replacement for worn or damaged thermostat housings in these models.

Common Applications and Issues Addressed

• Replacement for cracked or leaking thermostat housing
• Restores proper coolant flow and engine temperature regulation
• Prevents coolant leaks that can lead to engine overheating
• Addresses housing warping or damage from prolonged heat exposure
• Ensures secure mounting to avoid coolant system pressure loss

Installation Notes and Tips

• Verify compatibility with your Lexus, Scion, or Toyota model before installation
• Use appropriate gasket or sealant as the housing does not include a gasket or seal
• Ensure mounting surfaces are clean and free of debris for a proper seal
• Torque mounting bolts to manufacturer specifications (bolts not included)
• Inspect thermostat separately as it is not included with this housing

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5124 thermostat housing undergoes rigorous quality control to ensure durability and performance in demanding engine environments. While this product does not include a thermostat or mounting hardware, it is backed by Dorman's limited warranty against defects in material and workmanship, providing confidence in its reliability for your Lexus, Scion, or Toyota vehicle.