Motorad 459-180 Engine Coolant Thermostat

Motorad 459-180 Engine Coolant Thermostat

The Motorad Standard 459-180 engine coolant thermostat is built for OE-style cooling system performance in demanding applications. It uses OEM-quality materials, a copper case, and a wax compound for quick reaction to coolant temperature changes, with an included rubber O-ring seal for a secure installation.

Compatible With BMW M3, BMW M5, BMW M6, BMW Z8, and Porsche Cayenne applications that call for a 178°F thermostat, this part supports stable engine temperature control in performance and luxury vehicles. The Motorad 459-180 is a direct-fit thermostat solution for drivers replacing a worn or inaccurate coolant thermostat.

Key Features

• Standard engine coolant thermostat with a 178°F start-to-open temperature
• OE supplier construction using OEM-quality materials and manufacturing processes
• Copper case and wax compound for fast response to coolant temperature changes
• Offset design with OEM-style seals where applicable
• Rubber O-ring seal included
• Sealing flange outside diameter: 2.87 in
• Height: 3.07 in; height between flanges: 2.15 in
• Flange thickness: 0.27 in
• Bypass diameter: 2.87 in

Product Details

The Standard product line from Motorad focuses on OE-style thermostat replacement parts built to match factory specifications. Part number 459-180 is engineered for precise coolant flow control and consistent opening behavior, helping maintain proper operating temperature in BMW M3, BMW M5, BMW M6, BMW Z8, and Porsche Cayenne cooling systems. This part cross-references Four Seasons 45978 and 55980 for the same application.

What It Helps Address

• Engine running too cool or too hot due to thermostat wear
• Delayed coolant circulation from a sticking thermostat
• Temperature fluctuation in the cooling system
• Coolant leaks at the thermostat seal area
• Improper temperature control in 178°F thermostat applications

Installation Notes

Verify the required thermostat temperature and housing dimensions before installation. This thermostat includes one rubber seal and uses an O-ring seal type. It does not include an installation tool. Confirm fitment for your specific BMW M3, BMW M5, BMW M6, BMW Z8, or Porsche Cayenne by model year and cooling system specification before replacing the original part.

• Fits 2008-2013 BMW M3, N/A, Temperature 180F; Includes thermostat and seal; Higher Alternate Temperature Replacement; Standard
• Fits 2010 BMW M5, N/A, Standard
• Fits 2010 BMW M6, N/A, Standard
• Fits 2008-2010 Porsche Cayenne, N/A, 180F thermostat with seal.; Standard
• Fits 2000-2003 BMW M5, N/A, Temperature 180F; Includes thermostat and seal; Higher Alternate Temperature Replacement; Standard
• Fits 2000-2003 BMW Z8, N/A, Temperature 180F; Includes thermostat and seal; Higher Alternate Temperature Replacement; Standard

Quality Assurance

Manufactured to OEM specifications and processes by an OE supplier, this thermostat is built to meet the safety and material standards expected in factory-style cooling system service.