Motorad 1074-194 Engine Coolant Thermostat

OE-Style Engine Coolant Thermostat

The Motorad Standard 1074-194 engine coolant thermostat is built for OE-style cooling system service with OEM quality materials and manufacturing processes. It uses a copper case and wax compound for quick reaction to coolant temperature changes, helping maintain stable engine operating temperature in the 2016-2019 Hyundai Sonata and 2017-2020 Kia Optima.

Motorad’s Standard product line focuses on direct-fit replacement cooling components made to OEM specifications for everyday repair work. The 1074-194 follows that approach with a standard design, brass and silver finish, and an O-ring seal style for a factory-type service replacement.

• Engine coolant thermostat for OE-style temperature control
• Copper and steel construction
• Wax compound for rapid response to coolant temperature changes
• Start-to-open temperature: 194°F
• OEM design and grade type
• Jiggle pin weep hole included
• Gasket or seal included; O-ring seal type
• Compatible with 2016-2019 Hyundai Sonata and 2017-2020 Kia Optima

Detailed Product Overview

Motorad 1074-194 is an engine coolant thermostat designed for direct replacement in vehicles that require a 194-degree opening point. The copper case and wax element are selected to react quickly to coolant temperature changes, supporting consistent engine warm-up and temperature regulation. With a sealing flange outside diameter of 2.27 inches, height between flanges of 1.25 inches, and overall height of 2.67 inches, this thermostat is built around OEM specifications for proper fitment in the cooling system.

This part cross-references 194-4701 and 255002E272 for the same application. It is a practical replacement choice for Hyundai Sonata and Kia Optima cooling system service when the original thermostat is worn, sticking, or no longer regulating temperature correctly.

Common Cooling System Issues It May Address

• Engine running too cool or too warm
• Delayed warm-up after cold starts
• Temperature fluctuation during normal driving
• Thermostat sticking open or closed
• Cooling system performance concerns tied to thermostat wear

Installation Notes and Tips

Replace the thermostat with the correct gasket or seal and verify the sealing surfaces are clean before installation. Confirm the housing and coolant passages are free of debris, and refill the cooling system with the proper coolant mixture after service. Always verify vehicle application by year, make, and model before ordering.

Fits 2016-2019 Hyundai Sonata and 2017-2020 Kia Optima, standard position.

Quality Assurance

Motorad manufactures this thermostat with OEM quality materials and safety standards as an OE supplier, using OEM specifications and processes for cooling system service.