Denso 221-9439 Radiator

Denso Radiator for Kia Sedona

This Denso radiator is built for 2015-2021 Kia Sedona applications and follows OE-style specifications for fitment and cooling performance. Part number 221-9439 includes an integrated transmission oil cooler and is sized to match the vehicle’s cooling system requirements.

Key Features

• Core height: 18.8750
• Core width: 26.3750
• Core thickness: 0.6250
• Inlet diameter: 1.3750
• Outlet diameter: 1.3750
• Transmission oil cooler included
• OE-focused radiator configuration for proper engine cooling

Product Details

Denso radiators are supplied to OE car makers worldwide, and this radiator reflects that OE engineering approach with matched tank design, fin pitch, core dimensions, and materials. For Kia Sedona owners, 221-9439 is a direct-fit cooling component for maintaining stable engine temperature and supporting transmission fluid cooling through the built-in cooler. This part cross-references Kia (e.g., 25310-A9050) for the same application.

Compatible with 2015-2019 Kia Sedona and 2020-2021 Kia Sedona, this radiator is a practical replacement when the original unit is leaking, restricted, or no longer maintaining proper cooling efficiency. The Denso radiator line is built around OE fitment standards, making it a strong match for Kia Sedona cooling system service.

Common Problems This Radiator Can Address

• Engine overheating from a failing radiator core
• Coolant leaks from cracked or corroded radiator tanks
• Reduced cooling efficiency from internal blockage or damaged fins
• Transmission fluid temperature issues when the cooler circuit is compromised
• Fitment problems caused by non-OE-style replacement dimensions

Installation Notes and Tips

Before installation, verify core dimensions, inlet and outlet size, and transmission cooler line routing against the original radiator. Flush the cooling system, inspect hoses and clamps, and confirm there is no debris in the condenser or fan shroud area. After installation, refill with the correct coolant, bleed air from the system, and check for leaks at all hose and cooler connections.

Quality Assurance

Denso states that its radiators are built to OE manufacturer standards and undergo durability and function testing before release. That testing focus helps support reliable cooling performance in demanding driving conditions.