Motorad 7378-192 Engine Coolant Thermostat

Motorad Fail-Safe Thermostat for Ford Cooling Systems

The Motorad Fail-Safe Engine Coolant Thermostat, part number 7378-192, is built for Ford cooling systems that require a 192 degree Fahrenheit opening temperature. It uses OEM-spec materials and an OE-style design to help maintain stable coolant control in demanding service.

For Ford E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty applications, this thermostat is engineered to respond quickly to coolant temperature changes and support consistent engine operating temperature.

Key Features

• 192 degree Fahrenheit thermostat temperature for OE-specified applications
• Fail-Safe design locks open if overheating occurs to allow coolant flow
• Copper case and wax compound for fast response to coolant temperature changes
• Offset design with air relief valve
• Jiggle pin weep hole included
• OEM-style sealing features used where applicable
• Sealing flange outside diameter: 2.52 in.
• Bypass diameter: 1.38 in.
• Bypass length: 1.78 in.
• Flange thickness: 0.05 in.

Detailed Description

Motorad Fail-Safe 7378-192 is an engine coolant thermostat designed to match OE specifications and manufacturing processes. The copper case and wax compound help the thermostat react promptly as coolant temperature rises and falls, while the Fail-Safe mechanism is engineered to remain open after an overheating event so coolant can continue circulating. This makes it a practical choice for Ford E-350 Club Wagon, Ford E-350 Super Duty, Ford Excursion, Ford F-250 Super Duty, and Ford F-350 Super Duty cooling system service.

This part cross-references Four Seasons 73789 for the same application.

What It Helps Address

• Engine running hotter than normal due to a worn thermostat
• Delayed coolant flow during warm-up or temperature swings
• Temperature instability in high-load Ford truck and van cooling systems
• Thermostat failure that can leave the engine without proper coolant regulation

Installation Notes and Tips

Verify the 192 degree Fahrenheit specification before installation and confirm housing and bypass dimensions against the original part. The thermostat includes a jiggle pin weep hole and offset design; align the unit as required by the housing layout and follow the vehicle service procedure for coolant refill and air bleeding. Gasket or seal is not included, and an installation tool is not included.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards, this thermostat is built to meet the demands of automotive cooling systems. Motorad part number 7378-192 is produced to OEM specifications and processes for consistent fit and function.

Compatible Vehicles

• Fits 2003-2004 Ford E-350 Club Wagon, N/A
• Fits 1999-2003 Ford E-350 Super Duty, N/A
• Fits 2000-2003 Ford Excursion, N/A
• Fits 1999-2003 Ford F-250 Super Duty, N/A
• Fits 1999-2003 Ford F-350 Super Duty, N/A
• Fits 1996-2002 Ford E-350 Econoline Club Wagon, N/A
• Fits 1996-1998 Ford E-350 Econoline, N/A
• Fits 1997 Ford F-250 HD, N/A
• Fits 1996-1997 Ford F-350, N/A
• Fits 1996 Ford F-250, N/A