Motorad 521-180 Engine Coolant Thermostat Housing Assembly

Overview of Motorad Integrated Housing Thermostat 521-180

The Motorad Integrated Housing Thermostat 521-180 is designed specifically for Cadillac CTS, SRX, and STS models. This engine coolant thermostat housing assembly ensures precise temperature regulation with a 180°F opening temperature, helping maintain optimal engine performance.

• Compatible with Cadillac CTS, SRX, and STS
• Integrated Housing Thermostat product line
• Opening temperature: 180°F
• Constructed from aluminum, stainless steel, and copper
• Includes rubber gasket/seal and jiggle pin
• Features 2 bolt holes and 2 outlet ports
• Bleeder hole included for air release
• Hardware included (excluding bolts and mounting hardware)

Product Line Details: Integrated Housing Thermostat

The Motorad Integrated Housing Thermostat line combines the thermostat and housing into a single assembly, streamlining installation and improving reliability. This design reduces potential leak points and simplifies coolant system maintenance. The 521-180 part benefits from this integrated approach, providing a durable and efficient solution for Cadillac CTS, SRX, and STS vehicles.

Detailed Product Description

This engine coolant thermostat housing assembly is engineered with a combination of aluminum, stainless steel, and copper materials to provide strength and corrosion resistance. The thermostat opens at 180°F, ensuring the engine reaches and maintains the correct operating temperature. The assembly includes a rubber gasket to create a secure seal and prevent coolant leaks. A bleeder hole and jiggle pin are incorporated to facilitate air removal from the cooling system, enhancing system efficiency. The housing features two outlet ports with diameters of 0.79 inches and 1.75 inches, accommodating coolant flow requirements for the specified Cadillac models.

Common Applications and Issues Addressed

• Replacement for faulty or leaking thermostat housings in Cadillac CTS, SRX, and STS
• Resolves engine overheating caused by thermostat failure
• Prevents coolant leaks due to worn or damaged seals
• Improves coolant flow and temperature regulation
• Eliminates air pockets in the cooling system with bleeder hole and jiggle pin

Installation Notes and Tips

Installation requires removal of the old thermostat housing assembly. Note that bolts are not included, so original hardware or appropriate replacements will be necessary. The included rubber gasket should be properly seated to ensure a leak-free seal. Use caution to avoid damaging the bleeder hole and jiggle pin during installation. No installation tool is included, so standard hand tools compatible with the vehicle’s specifications are recommended.

Quality Assurance and Warranty

Motorad’s Integrated Housing Thermostat assemblies are manufactured to meet OEM standards for fit and function. The use of durable materials such as aluminum, stainless steel, and copper ensures long service life. This part number 521-180 is backed by Motorad’s quality control processes, although specific warranty details should be confirmed with the supplier or manufacturer.