Motorad 246-180 Engine Coolant Thermostat

Engine Coolant Thermostat for OE-Style Cooling Control

Motorad 246-180 is a standard engine coolant thermostat built for OE-style temperature control in demanding cooling systems. It opens at 180°F and uses OEM-spec materials and processes to support consistent coolant flow in applications such as BMW 530i, BMW 528i, and Rolls-Royce Silver Spirit.

Key Features

• 180°F start-to-open temperature for standard engine cooling operation
• Copper case and wax compound for responsive temperature changes in coolant
• Manufactured to OEM specifications and processes
• Offset design with air relief valve where applicable
• OEM-style seals included where applicable
• Sealing flange outside diameter: 2.64 in
• Height: 1.98 in; height between flanges: 1.39 in
• Bypass diameter: 1.46 in; bypass length: 1.36 in
• Flange thickness: 0.05 in

Detailed Description

The Motorad Standard line focuses on direct-fit cooling system service parts built to OE dimensions and operating characteristics. Part number 246-180 is an engine coolant thermostat for vehicles that require a 180°F thermostat, including BMW 320i, BMW 528e, BMW 528i, BMW 530i, BMW 533i, Rolls-Royce Silver Shadow II, Rolls-Royce Silver Spirit, Rolls-Royce Silver Spur, and Rolls-Royce Touring Limousine. This part cross-references Gates 24680 and BBB Industries 13558 for the same application.

Common Problems This Part Can Address

• Engine running cooler or warmer than the specified thermostat range
• Delayed coolant circulation after cold start
• Temperature fluctuation caused by a worn thermostat element
• Cooling system service on BMW and Rolls-Royce applications with a 180°F thermostat spec
• Replacement of an OE-style thermostat with matching dimensions

Installation Notes and Tips

Verify the thermostat housing dimensions and bypass measurements before installation. Clean the mating surfaces thoroughly and inspect the housing, seals, and coolant condition during service. This thermostat does not include a gasket or seal, and no installation tool is included. Confirm the vehicle calls for a 180°F thermostat before replacing the original unit.

Quality Assurance

Motorad manufactures this thermostat using OEM-quality materials and safety standards as an OE supplier. The copper case and wax compound are selected to respond quickly to coolant temperature changes, and the part is produced to OEM specifications for consistent fit and operation. Part number 246-180 is built for long-term cooling system service in supported BMW and Rolls-Royce applications.