Motorad 350-198 Engine Coolant Thermostat Housing Assembly

Integrated Thermostat Housing for OE Cooling Control

Motorad 350-198 is an integrated housing thermostat assembly built for precise coolant temperature control in demanding engine cooling systems. It is specified for 2004-2006 Chevrolet Astra applications and includes the thermostat housing and seal for a direct replacement service part.

The Motorad Integrated Housing Thermostat line focuses on OE-style fit and temperature response, making it a practical choice for Chevrolet Astra thermostat housing replacement work where the original housing and thermostat are serviced together.

Key Features

• Part number 350-198 integrated thermostat housing assembly
• Set to open at 198 Deg. F for OE specified temperature control
• Aluminum, stainless steel, and copper construction
• Rubber gasket/seal included
• 2 bolt holes and 1 outlet port
• Silver finish
• Offset design with air relief valve where applicable
• OE supplier manufacturing with OEM specifications and processes

Detailed Product Description

This thermostat housing assembly is engineered to regulate coolant flow at the specified 198 Deg. F opening temperature, helping the engine reach and maintain proper operating temperature. The copper case and wax compound support quick reaction to coolant temperature changes, while OEM-style seals and OE-specified construction help maintain a proper seal at the housing interface. For 2004-2006 Chevrolet Astra cooling system service, Motorad 350-198 provides a direct-fit thermostat housing solution built around the original application requirements.

This part cross-references Monroe Shocks & Struts (e.g., 902-6008, 35098) for the same application.

What It Helps Address

• Engine running too cool or too hot due to thermostat control issues
• Coolant leaks at the thermostat housing seal surface
• Delayed warm-up from a thermostat that no longer opens at the specified temperature
• Cooling system service needs on a Chevrolet Astra with an integrated housing design
• Replacement of a worn housing and thermostat assembly in one service step

Installation Notes and Tips

Verify the 198 Deg. F temperature specification and the 2-bolt housing layout before installation. Inspect the mating surfaces, clean the coolant passage area, and replace any damaged fasteners or hoses as needed since bolts and mounting hardware are not included. Confirm the outlet diameter and seal condition during installation to help prevent leaks after refill and bleed procedures.

Quality Assurance

Motorad manufactures this integrated housing thermostat using OEM quality materials and OE supplier processes to meet original equipment specifications. The design is intended to withstand demanding automotive cooling system conditions while maintaining accurate temperature response.