Gates 34807 Engine Coolant Thermostat

OE Type Thermostat for Precise Cooling Control

Gates 34807 is an OE Type Engine Coolant Thermostat built for accurate temperature regulation and a leak-free OEM-equivalent fit. It is an 180-degree thermostat with an O-ring seal, steel and copper construction, and a jiggle pin weep hole for controlled air bleeding during service.

Compatible with select Hyundai Genesis Coupe, Sonata, and Kia Rondo, Optima, Magentis, and Stinger applications, this Gates OE Type Thermostat 34807 is a direct-fit cooling system service part for vehicles that require OE temperature control.

Key Features

• OE Type thermostat for factory-style cooling system operation
• 180-degree start-to-open temperature for OE temperature control
• Steel and copper construction for durable thermal response
• O-ring seal for a leak-resistant installation
• Bottom by-pass design with one jiggle pin weep hole
• OE Performance comparison rating
• Gates 34807 thermostat cross-references Motorad 621-180 for the same application

Product Details

The Gates OE Type Thermostat line is engineered for vehicles that need precise coolant flow management and consistent operating temperature. Part number 34807 uses a bottom by-pass design, measures 2.07 inches in height, and features a 2.12-inch sealing flange outside diameter with a 1.09-inch by-pass flange diameter. The thermostat is built with steel and copper components and includes one seal with no gasket required.

This thermostat is a practical replacement choice for cooling system maintenance on Hyundai Genesis Coupe and Sonata, plus Kia Rondo, Optima, Magentis, and Stinger models. Gates 34807 supports OE-style temperature control for engines that call for an 180-degree thermostat.

What It Is Used For

• Replacing a thermostat that is stuck open or stuck closed
• Restoring proper engine warm-up and operating temperature
• Addressing coolant temperature fluctuation concerns
• Correcting overheating caused by restricted thermostat movement
• Servicing a leaking thermostat seal or housing interface

Installation Notes and Tips

Verify the OE temperature specification before installation and confirm the bottom by-pass layout matches the original part. Inspect the sealing surfaces, flush the cooling system if contamination is present, and replace worn coolant as needed during thermostat service. The jiggle pin weep hole should be oriented to allow trapped air to escape during filling and bleeding.

Fits 2010-2013 Hyundai Genesis Coupe, N/A; Fits 2006-2008 Hyundai Sonata, N/A; Fits 2007-2008 Kia Magentis, N/A; Fits 2007-2008 Kia Optima, N/A; Fits 2007-2012 Kia Rondo, N/A; Fits 2021 Genesis G80, N/A; Fits 2021 Genesis GV80, N/A; Fits 2022-2023 Genesis G80, N/A; Fits 2022-2023 Genesis GV80, N/A; Fits 2022-2023 Kia Stinger, N/A; Fits 2023 Genesis GV70, N/A.

Quality Assurance

Gates designs OE Type Thermostats to deliver OEM-equivalent fit and leak-free temperature control. Part number 34807 is built to OE performance expectations for cooling system service on the listed applications.