Motorad TA1089 Engine Coolant Thermostat Housing Assembly

Thermostat Housing Assembly for Hyundai and Kia

Motorad TA1089 is an engine coolant thermostat housing assembly built for OE-style replacement on select Hyundai and Kia applications. It combines the thermostat, temperature sensors, seal, and housing in one service part for 2009-2010 Hyundai Sonata, 2009-2010 Kia Optima, and 2009-2010 Kia Rondo.

The Motorad Thermostat Assembly line focuses on complete cooling-system service parts that match original equipment requirements. TA1089 follows that approach with a mechanical disk-style valve, integrated O-ring sealing, and a black steel, plastic, and rubber construction.

Key Features

• Engine coolant thermostat housing assembly for select Hyundai Sonata, Kia Optima, and Kia Rondo models
• Includes thermostat, temp sensors, seal, and housing
• Mechanical actuator with disk valve design
• Start-to-open temperature: 180°F (82.22°C)
• Bleeder hole and jiggle pin included for serviceability
• Pre-installed gasket/seal with O-ring seal type
• Black finish with steel, plastic, and rubber materials
• Thermal shock validated and 100% leak tested

Detailed Description

Motorad TA1089 is a standard replacement thermostat housing assembly engineered for cooling-system service where the thermostat, housing, and sealing components are replaced together. It is listed for 2009-2010 Hyundai Sonata, 2009-2010 Kia Optima, and 2009-2010 Kia Rondo, making it a direct-fit option for these model-year applications. The assembly uses a mechanical actuator and includes a bleeder hole, jiggle pin, and integrated seal to support proper coolant flow and air bleeding during service. This part cross-references Focus Auto Parts 86236 for the same application.

Common Problems This Part Can Address

• Coolant leaks at the thermostat housing or seal area
• Engine running too cool or too hot from thermostat wear
• Temperature sensor service needs tied to the housing assembly
• Air trapped in the cooling system after thermostat service
• Cracked or deteriorated plastic housing components

Installation Notes and Tips

Verify the engine application before installation and inspect the mating surfaces for corrosion or residue. Replace the old seal during service and confirm the housing seats evenly on the flange. After installation, refill and bleed the cooling system according to the vehicle service procedure to help prevent trapped air and temperature fluctuations.

Quality Assurance

Motorad manufactures this thermostat housing assembly to OEM quality standards through an OE supplier process. TA1089 is thermal shock validated and 100% leak tested to support cooling-system reliability in normal service conditions.