Motorad 828-217 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing for BMW Models

The Motorad Integrated Housing Thermostat 828-217 is designed to maintain optimal engine temperature for select BMW vehicles. Engineered with precision, this thermostat housing assembly ensures efficient coolant flow and temperature regulation for models like the BMW 535i, 640i xDrive, and 740Li.

• Integrated Housing Thermostat design for streamlined cooling system performance
• Opening temperature set at 217°F for accurate engine temperature control
• Includes a bleeder hole and jiggle pin to prevent air pockets and improve coolant circulation
• Constructed from durable plastic, stainless steel, and copper materials
• Features four outlet ports with varying diameters (0.88 in, 1.04 in, 1.55 in, 1.52 in) for precise fitment
• Compatible with multiple BMW models including 535i GT xDrive and ActiveHybrid 5

About the Motorad Integrated Housing Thermostat Product Line

The Integrated Housing Thermostat line by Motorad focuses on combining the thermostat and housing into a single assembly. This integration simplifies installation and reduces potential leak points in the cooling system. The 828-217 part exemplifies this approach, offering a reliable and compact solution tailored for BMW engines requiring a 217°F opening temperature.

Product Details and Specifications

This engine coolant thermostat housing assembly is designed without bolt holes and does not include mounting hardware or gaskets, allowing for compatibility with factory components. The black housing incorporates a bleeder hole and jiggle pin to facilitate air removal and maintain consistent coolant flow. Its four outlet ports accommodate different hose sizes, ensuring a proper connection within the cooling system. The materials used—plastic, stainless steel, and copper—provide a balance of durability and corrosion resistance suitable for long-term engine operation.

Common Applications and Problem Resolution

• Replacement for faulty or leaking thermostat housings in BMW 535i and 640i xDrive models
• Helps resolve engine overheating caused by thermostat failure
• Prevents coolant leaks due to housing cracks or wear
• Improves coolant circulation by eliminating air pockets with the bleeder hole and jiggle pin
• Supports proper engine temperature regulation for hybrid models like the ActiveHybrid 5

Installation Notes and Tips

Ensure the cooling system is fully drained before removing the old thermostat housing. Since this assembly does not include gaskets or mounting hardware, reuse factory components or source compatible replacements. Verify the outlet port sizes match your vehicle’s hose connections. The bleeder hole and jiggle pin should be positioned correctly to allow air to escape during coolant refilling. Follow manufacturer torque specifications when securing the housing to avoid damage.

Quality Assurance and Warranty

Motorad parts are manufactured to meet OEM standards for fit and function. The Integrated Housing Thermostat 828-217 undergoes quality checks to ensure reliable performance in BMW cooling systems. Warranty coverage details should be confirmed with the distributor or retailer at the time of purchase.