Motorad 349-198 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for OE Cooling Control

Motorad 349-198 is an engine coolant thermostat housing assembly built for OE-style cooling system service. It combines the thermostat, housing, and seal in one integrated design for select Cadillac, Saab, and Saturn applications, including the 2003-2004 Cadillac CTS and 1999-2003 Saab 9-5.

The Motorad Integrated Housing Thermostat line is engineered around OEM specifications and processes, with OE supplier manufacturing standards. This part number, 349-198, uses a copper case and wax compound for quick response to coolant temperature changes, along with an offset design and OEM-style seals where applicable.

Key Features

• Engine coolant thermostat housing assembly with integrated housing design
• Opening temperature: 198 Deg. F
• Includes thermostat, housing, and rubber seal
• Aluminum, stainless steel, and copper construction
• 2 bolt holes and 1 outlet port
• Silver finish
• Outlet diameter: 1.41 in
• OE-style design with air relief valve where applicable

Detailed Description

Motorad 349-198 is designed for vehicles that use an integrated thermostat housing assembly rather than a separate thermostat and housing. The 198-degree opening temperature matches OE-specified cooling requirements for applications such as the Cadillac CTS, Saab 9-5, and Saturn L300, helping maintain proper engine operating temperature and coolant flow control. This part cross-references Stant 48759 for the same application.

Compatible With 2001-2005 Saturn L300, 2003-2004 Cadillac CTS, 1999-2003 Saab 9-5, 2001-2003 Saturn LW300, 2002-2003 Saturn Vue, 1997-2001 Cadillac Catera, 2000 Saturn LS2, 2000 Saturn LW2, 1994-1997 Saab 900, and 1995-1997 Saab 9000.

What This Part Helps Address

• Engine running hotter or cooler than specified
• Delayed coolant circulation after cold start
• Thermostat housing leaks at the seal surface
• Temperature control issues caused by a worn thermostat element
• Cooling system service needs on OE-style integrated housing setups

Installation Notes and Tips

Verify the 198 Deg. F temperature rating and outlet configuration before installation. Inspect the mating surfaces, replace any damaged coolant hoses or clamps as needed, and confirm the rubber seal seats evenly in the housing. Because bolts and mounting hardware are not included, reuse or source the correct fasteners for the vehicle. Bleeder hole and jiggle pin are not included.

Quality Assurance

Motorad manufactures this integrated housing thermostat with OEM-quality materials and OE supplier standards. The copper case and wax compound are selected for responsive temperature control, and the assembly is produced to OEM specifications for demanding automotive cooling systems.