Koyorad A13191 Radiator

Koyorad A13191 Radiator Overview

The Koyorad A13191 radiator is an OE-equivalent replacement built for consistent cooling performance and direct-fit service on select Hyundai and Kia applications. It features an aluminum core with plastic tanks and an internal transmission oil cooler for vehicles that route automatic transmission fluid through the radiator.

Compatible With 2011-2017 Hyundai Azera, Kia Cadenza, Kia Optima, and Hyundai Sonata applications, this radiator is built around the dimensions and connection points needed for a straightforward replacement. The Koyorad Radiator line focuses on OE-style fit and function, and the A13191 follows that approach for everyday repair work.

Key Features

• OE-equivalent replacement radiator from Koyorad
• Aluminum core with plastic tanks
• Single-row core design
• Core dimensions: 25.0625 in. height, 19.5 in. width, 0.625 in. thickness
• 1.375 in. inlet and 1.375 in. outlet diameters
• Internal transmission oil cooler included
• Transmission oil cooler diameter: 0.875 in.
• Built for select Hyundai and Kia cooling system layouts

Product Details

Koyorad A13191 is a radiator replacement for 2012-2017 Hyundai Azera, 2014-2016 Kia Cadenza, 2011-2015 Kia Optima, and 2011-2013 Hyundai Sonata models. The aluminum core supports heat transfer, while the plastic tank construction matches common OE radiator design used in these vehicles. The integrated transmission oil cooler makes this unit appropriate for automatic-transmission cooling systems that use the radiator as part of the fluid temperature control circuit.

Koyorad Radiator products are developed with OE replacement requirements in mind, using technical manufacturing experience to deliver a radiator that matches the application’s cooling layout. The A13191 part number is a direct reference for shoppers searching for a Hyundai Sonata radiator, Kia Optima radiator, or Hyundai Azera radiator replacement.

Common Cooling Issues This Radiator Addresses

• Cracked or leaking radiator tanks
• Corrosion or damage in the radiator core
• Restricted coolant flow from an aging radiator
• Transmission fluid temperature control issues tied to a failing internal cooler
• Overheating caused by reduced heat exchange efficiency

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet sizes, and transmission cooler connections before installation. Drain coolant safely, inspect hoses and clamps for wear, and confirm that the cooling fan, thermostat, and pressure cap are in good condition before returning the vehicle to service. After installation, refill with the correct coolant type and bleed the system according to the vehicle service procedure.

For fitment-specific searches, this part is commonly listed as Koyorad A13191 for Hyundai Sonata, Kia Optima, Hyundai Azera, and Kia Cadenza cooling system replacement work.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and production experience focused on replacement fit and cooling performance. The A13191 is built to match the listed vehicle applications and radiator configuration requirements.