Motorad 5378-192 Engine Coolant Thermostat

Motorad UltraStat Thermostat for Ford Cooling Systems

Motorad UltraStat Part Number 5378-192 is an engine coolant thermostat built for Ford trucks and vans that need a 192°F temperature rating and OE-style cooling control. It is a direct-fit thermostat for select Ford E-350, F-250, F-350, and Excursion applications, with stainless steel construction for corrosion resistance and long service life.

The UltraStat line focuses on durable thermostat construction and controlled coolant flow. This Motorad 5378-192 thermostat uses BLVT valve technology to help reduce thermal shock in the cooling system while maintaining stable operating temperature.

Key Features

• 192°F engine coolant thermostat for temperature control
• Heavy-gauge stainless steel construction for corrosion resistance
• BLVT valve technology to help minimize thermal shock
• Jiggle pin weep hole included for air bleeding during service
• Sealing flange outside diameter: 2.52 in
• Bypass diameter: 1.38 in
• Bypass length: 1.78 in
• Flange thickness: 0.05 in
• No gasket or seal included

Detailed Description

Motorad UltraStat 5378-192 is an engine coolant thermostat engineered for Ford cooling systems that call for a 192°F thermostat. It is listed for 1996-2004 Ford E-350, F-250, F-350, and Excursion applications, including 1996-2002 Ford E-350 Econoline Club Wagon, 1996-1998 Ford E-350 Econoline, 1997 Ford F-250 HD, 1996-1997 Ford F-350, and 1996 Ford F-250. This thermostat is built with stainless steel components for durability and corrosion resistance, and the jiggle pin weep hole supports coolant system bleeding during installation.

Part Number 5378-192 is a practical OE-style replacement for drivers searching for a 192F thermostat for Ford E-350 Super Duty, Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Excursion cooling system service. This part cross-references Monroe Shocks & Struts (e.g., 95378192, MU55269) for the same application.

What It Helps Address

• Engine running too cool or too warm due to thermostat wear
• Coolant flow control issues in Ford truck and van cooling systems
• Corrosion-related thermostat failure
• Air trapped in the cooling system after service
• Temperature instability that can affect heater performance and engine operation

Installation Notes and Tips

Verify the 192°F temperature specification and match the sealing flange and bypass dimensions before installation. The gasket or seal is not included, so confirm the correct sealing component for your application before service. Clean the thermostat housing and mating surfaces thoroughly, and bleed the cooling system according to factory procedure after installation.

Quality Assurance

Motorad UltraStat thermostats are built with stainless steel construction and BLVT valve technology to support durable, corrosion-resistant cooling system service. Part Number 5378-192 is made to meet OE specifications for the listed Ford applications.