Motorad 470-221 Engine Coolant Thermostat Housing Assembly

Overview of Motorad Integrated Housing Thermostat 470-221

The Motorad Integrated Housing Thermostat 470-221 is engineered for precise temperature regulation in BMW 540i, 740i, and 740iL models. Designed to maintain optimal engine performance, this thermostat housing assembly ensures reliable coolant flow and temperature control.

• Compatible with BMW 540i, 740i, and 740iL models
• Integrated thermostat with a 221°F opening temperature
• Constructed from durable aluminum, stainless steel, and copper materials
• Includes a rubber gasket for a secure seal
• Features a bleeder hole and jiggle pin for efficient air release
• Four bolt holes for secure mounting (bolts not included)
• Single outlet port with a 1.69-inch diameter

Product Line: Motorad Integrated Housing Thermostat

The Motorad Integrated Housing Thermostat line combines the thermostat and housing into a single assembly, simplifying installation and improving reliability. This design reduces potential leak points and ensures consistent coolant flow, making it a practical choice for BMW vehicles requiring precise temperature management.

Detailed Product Description

This engine coolant thermostat housing assembly (part number 470-221) is crafted from a combination of aluminum, stainless steel, and copper to provide strength and corrosion resistance. The integrated thermostat opens at 221 degrees Fahrenheit, allowing coolant to circulate once the engine reaches optimal operating temperature. The included rubber gasket ensures a tight seal between the housing and engine block, preventing leaks. Additionally, the housing features a bleeder hole and jiggle pin to facilitate air removal from the cooling system, enhancing overall efficiency.

Common Applications and Issues Addressed

• Regulates engine temperature to prevent overheating in BMW 540i, 740i, and 740iL
• Replaces faulty or leaking thermostat housings
• Eliminates coolant leaks caused by worn seals or damaged housings
• Improves coolant flow and system pressure stability
• Prevents air pockets in the cooling system with bleeder hole and jiggle pin

Installation Notes and Tips

• Ensure the engine is cool before beginning installation
• Use the included rubber gasket to achieve a proper seal
• Torque bolts evenly across the four mounting holes (bolts not included)
• Bleeder hole and jiggle pin assist in removing trapped air during coolant refill
• Verify compatibility with BMW 540i, 740i, and 740iL before installation

Quality Assurance and Warranty

The Motorad Integrated Housing Thermostat 470-221 is manufactured to meet OEM specifications for fit and function. While hardware and installation tools are not included, the assembly is designed for durability and reliable performance. Please consult product documentation or supplier for warranty details.