Gates 34711 Engine Coolant Thermostat

Gates 34711 Integrated Housing Thermostat

The Gates 34711 integrated housing thermostat is built for precise coolant temperature control in vehicles that use a thermostat and housing assembly in one unit. It helps maintain stable engine operating temperature for smoother operation and efficient cooling system performance.

Gates Integrated Housing Thermostat products focus on OE-style temperature regulation for modern cooling systems. This line addresses applications where the thermostat is integrated into the housing, providing a direct aftermarket replacement option for Lexus GS350, IS350, IS250, and related models.

Key Features

• Integrated housing thermostat design for vehicles that use a combined thermostat and housing assembly
• Start-to-open temperature: 180°F / 82°C
• Outlet inside diameter: 1.31 in.
• Outlet outside diameter: 1.485 in.
• 3 bolt holes for secure mounting
• Jiggle pin weep hole and jiggle pin/check valve: Yes
• 1 seal included in the assembly design
• OE Performance rating for OE-style fit and function
• Non-electric thermostat design

Detailed Description

Gates part number 34711 is an engine coolant thermostat with an integrated housing, engineered for accurate temperature regulation in cooling systems that require this style of replacement. The 180-degree opening temperature supports factory-style thermal control, helping the engine reach and maintain its operating range as specified for the application. This thermostat assembly is a practical choice for Lexus GS450h, GS350, IS350, IS250, IS300, RC300, and RC350 applications that use an integrated housing thermostat.

This part cross-references Bosch 66080 and Motorad 660-180 for the same application. Gates 34711 is also listed with OE performance positioning, making it a direct-fit style option for drivers servicing a Lexus cooling system with an integrated thermostat housing.

What It Helps Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature fluctuation caused by a worn thermostat assembly
• Cooling system service needs on integrated housing designs
• Thermostat-related overheating concerns from restricted coolant flow control
• Replacement needs on Lexus GS350, IS350, IS250, and related models

Installation Notes and Tips

Verify the housing style, outlet dimensions, bolt-hole count, and opening temperature before installation. This Gates 34711 thermostat is a non-electric integrated housing design, so confirm the vehicle uses the same configuration and 180°F specification. Inspect the sealing surfaces and cooling system condition during service, and follow the vehicle manufacturer’s coolant fill and bleed procedure after installation.

Quality Assurance

Gates develops aftermarket thermostat solutions for integrated housing applications, with a focus on accurate temperature regulation and OE-style replacement performance. The Gates 34711 is built for vehicles that require a thermostat and housing assembly rather than a standalone thermostat.

• Fits 2007-2011 Lexus GS450h, N/A
• Fits 2013-2018 Lexus GS450h, N/A
• Fits 2013-2015 Lexus GS350, N/A
• Fits 2007-2011 Lexus GS350, N/A
• Fits 2006 Lexus GS300, N/A
• Fits 2006-2015 Lexus IS250, N/A
• Fits 2006-2018 Lexus IS350, N/A
• Fits 2016-2018 Lexus IS300, N/A
• Fits 2015-2018 Lexus RC350, N/A
• Fits 2016-2018 Lexus RC300, N/A