Motorad 5354-192 Engine Coolant Thermostat

Motorad UltraStat 5354-192 Thermostat Overview

Motorad UltraStat 5354-192 is an engine coolant thermostat built for OE-style temperature control in a wide range of Ford, Mazda, Mercury, Lincoln, and Jaguar applications. This 192°F thermostat is engineered for direct replacement service where stable coolant regulation and corrosion resistance matter.

The UltraStat line focuses on durable stainless steel construction and controlled opening behavior to help maintain consistent engine operating temperature. For drivers searching for a 192F thermostat for Ford Fusion, Mazda Tribute, or Mercury Mariner applications, this part number 5354-192 is a direct-fit option for many listed vehicles.

Key Features

• 192°F opening temperature for OE-spec engine coolant control
• Heavy-gauge stainless steel construction for corrosion resistance
• BLVT valve technology to reduce thermal shock to cooling system components
• Jiggle pin weep hole included for air bleeding during service
• Sealing flange outside diameter: 2.13 in
• Bypass diameter: 1.38 in; bypass length: 1.58 in
• Flange thickness: 0.05 in
• No gasket or seal included

Product Details

Motorad UltraStat 5354-192 is an engine coolant thermostat designed for vehicles that require a 192°F thermostat and OE-matching cooling system operation. The stainless steel design supports long-term durability, while the valve design helps moderate temperature transitions as coolant flow changes. This makes it a practical replacement for service on Ford Fusion, Mazda 6, Mercury Milan, and other listed applications.

This part cross-references Dorman - HELP 46139 for the same application. It is also listed under Motorad 5354-192.

Common Problems This Thermostat Can Address

• Engine running cooler or warmer than specified
• Delayed warm-up after cold starts
• Temperature fluctuation caused by a worn thermostat
• Corrosion-related thermostat failure in the cooling system
• Air bleeding concerns during coolant service

Installation Notes

Verify the thermostat temperature rating and housing dimensions before installation. This unit does not include a gasket or seal, so the correct sealing component must be sourced separately if required by the application. Confirm bypass dimensions and flange measurements against the original part, and follow the vehicle service procedure for coolant refill and air bleeding.

Compatible With 2011-2012 Ford Fusion, N/A; 2006-2008 Ford Fusion, N/A; 2008-2011 Mazda Tribute, N/A; 2001-2006 Mazda Tribute, N/A; 2005-2011 Mercury Mariner, N/A; 2006-2011 Mercury Milan, N/A; 2000-2008 Jaguar S-Type, N/A; 2003-2008 Mazda 6, N/A; 2001-2007 Ford Escape, N/A; 2006 Lincoln Zephyr, N/A; 2000-2006 Mazda MPV, N/A; 2001-2005 Ford Taurus, N/A; 2000-2005 Lincoln LS, N/A; 2001-2005 Mercury Sable, N/A; 1996-1997 Mercury Sable, N/A; 2003-2004 Mercury Marauder, N/A; 1995-2002 Lincoln Continental, N/A; 1999-2002 Mercury Cougar, N/A; 2001 Ford Mustang, N/A; 1996-1999 Ford Mustang, N/A; 1998-2000 Ford Contour, N/A; 1995 Ford Contour, N/A; 1998-2000 Mercury Mystique, N/A.

Quality Assurance

Motorad UltraStat thermostats are built with stainless steel construction and corrosion-resistant materials to support dependable cooling system service. The BLVT valve technology is used to help control thermal transitions in the cooling circuit, and the part is manufactured to meet OE specifications for the listed applications.