Dorman 902-5219 Engine Coolant Thermostat Housing - Engine Block

Overview of Dorman Engine Coolant Thermostat Housing 902-5219

The Dorman 902-5219 engine coolant thermostat housing is designed for reliable cooling system performance in select Audi and Volkswagen models. This black plastic housing provides a precise fit for vehicles such as the Audi A3 Quattro, Volkswagen Bora, and Jetta, ensuring proper coolant flow and engine temperature regulation.

• Constructed from durable black plastic material
• Compatible with Audi A3 Quattro, Volkswagen Bora, and Jetta models
• Outlet and inlet port diameter: 1.382 inches
• Height of housing: 4 inches
• Mounting hole quantity: 2 with 0.311 inch diameter
• Bolt hole center-to-center distance: 2.74 inches
• Flange thickness: 0.317 inches
• Housing neck angle: 45 degrees
• Does not include thermostat, gasket, bolts, or O-rings

Detailed Product Description

The Dorman 902-5219 engine coolant thermostat housing is engineered to meet the specifications required for proper coolant system operation in compatible Audi and Volkswagen vehicles. Made from high-quality plastic, this housing offers resistance to corrosion and heat, contributing to the longevity of the cooling system. The 1.382-inch diameter inlet and outlet ports facilitate efficient coolant flow, while the 45-degree housing neck angle supports optimal hose alignment. With two mounting holes spaced 2.74 inches apart, installation aligns with factory mounting points for a secure fit. Note that this part does not include the thermostat, gasket, bolts, or O-rings, so these components should be sourced separately if needed.

Common Applications and Issues Addressed

• Replacement for cracked or leaking thermostat housing
• Resolves coolant leaks causing engine overheating
• Restores proper coolant flow in Audi A3 Quattro, Volkswagen Bora, and Jetta
• Addresses housing warping or damage from heat exposure
• Prevents coolant contamination due to housing failure

Installation Notes and Tips

• Ensure the engine is cool before beginning installation
• Inspect and replace thermostat, gasket, and O-rings as needed since they are not included
• Clean mounting surfaces thoroughly to prevent leaks
• Torque mounting bolts to manufacturer specifications
• Check coolant levels and system pressure after installation

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 902-5219 thermostat housing undergoes quality control inspections to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or the supplier for exact warranty terms.