Motorad 733-189 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Porsche and Volkswagen

The Motorad Standard 733-189 engine coolant thermostat is designed to maintain optimal engine temperature for select Porsche and Volkswagen models. Engineered with precise temperature control, this thermostat ensures efficient cooling system performance and helps prevent engine overheating.

• Start to open temperature: 189°F for accurate thermal regulation
• Sealing flange outside diameter: 1.64 inches for secure fitment
• Height between flanges: 1.87 inches and overall height: 2.67 inches
• Includes a rubber gasket with O-ring seal for leak prevention
• Flange thickness: 0.05 inches for durability and proper sealing
• Compatible with Porsche Cayenne and Volkswagen Atlas, Passat, Touareg, and related models

About the Motorad Standard Product Line

The Motorad Standard line offers dependable replacement parts designed to meet OEM specifications. This engine coolant thermostat from the Standard series provides consistent performance and reliable sealing, making it suitable for maintaining the cooling system integrity in Porsche and Volkswagen vehicles. The inclusion of a rubber gasket and O-ring seal ensures a tight fit and reduces the risk of coolant leaks.

Product Details and Specifications

The Motorad Standard 733-189 thermostat features a start to open temperature of 189 degrees Fahrenheit, which is critical for regulating coolant flow and maintaining engine temperature within optimal ranges. The thermostat’s sealing flange outside diameter measures 1.64 inches, with a flange thickness of 0.05 inches, ensuring a precise and secure installation. The height between flanges is 1.87 inches, and the overall height is 2.67 inches, dimensions that align with the cooling system requirements of compatible Porsche and Volkswagen models. This thermostat includes one rubber gasket with an O-ring seal type, providing effective sealing to prevent coolant leaks. Note that this thermostat does not include a jiggle pin weep hole and does not come with an installation tool.

Compatible Vehicles and Applications

• Porsche Cayenne
• Volkswagen Atlas and Atlas Cross Sport
• Volkswagen Passat and Passat CC
• Volkswagen Teramont
• Volkswagen Touareg

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Coolant leaks from worn or damaged seals
• Poor engine temperature regulation affecting performance
• Inconsistent coolant flow causing engine inefficiency
• Replacement of faulty OEM thermostat components

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns. Remove the old thermostat and clean the housing surface thoroughly to ensure proper sealing. This thermostat includes a rubber gasket with an O-ring seal; verify the gasket is seated correctly to prevent leaks. No installation tool is included, so use appropriate hand tools and follow vehicle-specific service manual instructions for torque specifications and procedures.

Quality Assurance and Warranty

The Motorad Standard 733-189 thermostat is manufactured to meet industry standards for durability and performance. It includes a rubber gasket for reliable sealing and is tested to open at the specified temperature of 189°F. While specific warranty details are not provided, Motorad products typically adhere to quality control processes to ensure consistent functionality and fitment for Porsche and Volkswagen vehicles.