Motorad 277-180 Engine Coolant Thermostat

Motorad 277-180 Engine Coolant Thermostat

The Motorad 277-180 is a standard engine coolant thermostat built to OE specifications for precise temperature control in demanding cooling systems. It is set to begin opening at 180°F and uses a copper case with wax compound for quick reaction to coolant temperature changes.

Key Features

• Standard engine coolant thermostat for OE-style replacement
• 180°F start-to-open temperature
• Copper case and wax compound for responsive operation
• Offset design with air relief valve
• Jiggle pin weep hole included
• OEM-style seals used where applicable
• Sealing flange outside diameter: 2.64 in
• Height: 1.97 in; height between flanges: 1.38 in
• Bypass diameter: 1.97 in; bypass length: 0.96 in
• Flange thickness: 0.06 in

Detailed Description

Motorad Standard thermostats are manufactured by an OE supplier using OEM-quality materials and production processes. The 277-180 is engineered for vehicles that require a 180°F thermostat and is listed for Porsche 928 applications from 1983-1991 and 1993-1995. For Porsche 928 owners searching for a 180F OEM engine coolant thermostat, Motorad 277-180 provides the correct temperature rating and OE-style construction.

This part cross-references 180-772 and P27780 for the same application.

What It Helps Address

• Engine running too cool because of a thermostat stuck open
• Engine overheating caused by a thermostat that does not open correctly
• Slow warm-up after cold starts
• Unstable coolant temperature during normal driving
• Cooling system performance issues on Porsche 928 models

Installation Notes and Tips

Verify the thermostat housing dimensions and the 180°F temperature rating before installation. The jiggle pin weep hole helps with air bleeding during coolant fill, and the offset design should be matched to the original thermostat orientation. No gasket or seal is included, and no installation tool is included.

Quality Assurance

Motorad manufactures this thermostat to OEM specifications and safety standards as an OE supplier, using materials selected for consistent cooling-system performance.

Compatible With Porsche 928

• Fits 1983-1991 Porsche 928, N/A; Standard
• Fits 1993-1995 Porsche 928, N/A; Standard