Koyorad A13939 Radiator

Koyorad A13939 Radiator Overview

The Koyorad A13939 radiator is an OE-equivalent replacement built for precise cooling-system fitment and dependable heat transfer. It is engineered for the 2025 Kia K4 and 2021-2023 Hyundai Elantra, making it a direct choice for drivers replacing a leaking, damaged, or inefficient radiator.

Koyorad Radiator products focus on replacement accuracy and consistent construction, with the technical experience needed to produce a radiator that matches the application the first time. The A13939 follows that approach with core and tank dimensions that support proper installation and cooling performance.

Key Features

• OE-equivalent replacement radiator from Koyorad
• Core height: 610 mm
• Core width: 428.8 mm
• Core thickness: 16 mm
• Upper/left tank dimensions: 24.0625 in height, 16.875 in width, 5/8 in thickness
• Lower/right tank dimensions: 16 5/8 in length, 1 13/8 in pipe size, 1 13/16 in width
• Direct-fit cooling component for select Kia and Hyundai applications
• Part number: A13939

Detailed Description

Koyorad A13939 is a radiator replacement for drivers seeking an OE-style cooling solution for the Kia K4 and Hyundai Elantra. The radiator’s 610 mm core height, 428.8 mm core width, and 16 mm core thickness are specified to support proper thermal exchange within the vehicle’s cooling system. The tank measurements and pipe sizing help confirm application-specific fitment for the listed vehicles. This part number, A13939, is a practical option when replacing a worn radiator on a 2025 Kia K4 or a 2021-2023 Hyundai Elantra.

This part cross-references BBB Industries 13939 for the same application.

What It Can Help Resolve

• Coolant leaks from a cracked or corroded radiator
• Overheating caused by reduced heat dissipation
• Cooling-system performance loss from internal blockage
• Physical damage from road debris or impact
• Replacement needs after radiator tank or core failure

Installation Notes and Tips

Verify radiator dimensions, hose connections, and mounting points against the original unit before installation. Drain the cooling system fully, inspect hoses and clamps for wear, and refill with the correct coolant specification after installation. Bleed air from the system according to the vehicle service procedure to help prevent hot spots and temperature fluctuations. Confirm fitment for the exact model year before ordering; Koyorad A13939 is listed for Fits 2025 Kia K4, N/A and Fits 2021-2023 Hyundai Elantra, N/A.

Quality Assurance

Koyorad manufactures OE-equivalent radiators using application-specific engineering and replacement-focused construction. The brand’s experience in cooling components supports consistent fitment and dependable replacement quality for the listed Kia and Hyundai applications.