Denso 221-9446 Radiator

Denso 221-9446 Radiator for Inverter Cooling

The Denso 221-9446 radiator is built for inverter cooling applications in select Kia Optima and Hyundai Sonata models. It uses OE-style dimensions and materials to support proper thermal control, fitment, and dependable cooling performance.

Key Features

• Core height: 2.3125 in.
• Core width: 25.0625 in.
• Core thickness: 1.0000 in.
• Inlet diameter: 0.6875 in.
• Outlet diameter: 0.6875 in.
• No transmission oil cooler included
• OE-based radiator configuration for accurate fitment

OE-Style Cooling Performance

Denso radiators are engineered using OE supplier experience and manufacturing standards that focus on fit, durability, and thermal efficiency. The 221-9446 is designed around the listed core dimensions and connection sizes to match the original cooling layout on 2011-2016 Kia Optima inverter cooling applications and 2012-2015 Hyundai Sonata inverter cooling applications. This part cross-references Kia (e.g., 25308-4R000) for the same application.

What This Radiator Helps Address

• Overheating caused by a restricted or damaged radiator
• Coolant leaks from cracked or aging radiator components
• Poor heat transfer from worn core fins or internal blockage
• Incorrect fitment when replacing the original inverter cooling radiator
• Cooling system performance loss in Kia Optima and Hyundai Sonata inverter cooling setups

Installation Notes and Tips

Verify core dimensions, inlet and outlet sizes, and cooling-system layout before installation. This radiator does not include a transmission oil cooler. Confirm the vehicle uses the inverter cooling configuration listed for your year and model before ordering. The part number 221-9446 should be matched to the original radiator specification for proper installation.

Quality Assurance

Denso manufactures radiators to OE-level standards and subjects them to durability and function testing before release. That process helps ensure consistent performance, reliable fitment, and cooling-system support under demanding operating conditions.