Denso 221-9400 Radiator

Denso 221-9400 Radiator Overview

The Denso 221-9400 radiator is an OE-style cooling replacement built for direct fitment on select Kia Spectra and Kia Spectra5 applications. It is engineered around OE dimensions and materials to support consistent engine temperature control, dependable fitment, and stable cooling performance.

For Kia Spectra and Kia Spectra5 owners needing a radiator replacement, this unit follows the core sizing and connection details needed for a straightforward service job. The Denso 221-9400 also includes an integrated transmission oil cooler, making it a practical choice for vehicles equipped with automatic transmission cooling through the radiator.

Key Features

• OE-style radiator construction from Denso
• Core dimensions: 14.7600 in. height, 28.1400 in. width, 0.6300 in. thickness
• Inlet diameter: 1.3130 in.
• Outlet diameter: 1.3200 in.
• Transmission oil cooler included
• Built to match OE manufacturer standards for configuration and fitment

Detailed Product Description

Denso supplies radiators to original equipment vehicle manufacturers worldwide, and the 221-9400 reflects that OE-focused engineering approach. The radiator configuration, tank design, fin pitch, core dimensions, and material selection are developed to align with factory specifications, helping maintain proper coolant flow and heat exchange in daily driving and demanding conditions. This makes the Denso 221-9400 a strong replacement option when servicing the cooling system on a 2004-2009 Kia Spectra or a 2005-2009 Kia Spectra5.

This part cross-references Spectra Premium CU2784 for the same application. The Denso 221-9400 is also referenced by Kia OE numbers 25310-2F010 and 25310-2F030 for related applications.

Vehicle Fitment

• Fits 2004-2009 Kia Spectra, N/A
• Fits 2005-2009 Kia Spectra5, N/A

Common Cooling System Issues It Can Address

• Leaking radiator tanks or seams
• Restricted coolant flow from an aging radiator core
• Overheating caused by reduced heat transfer
• Transmission fluid cooling concerns when the radiator cooler circuit is part of the system
• Fitment problems from a damaged or incorrect replacement radiator

Installation Notes and Quality Assurance

Verify core dimensions, inlet and outlet sizing, and transmission cooler connections before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator cap and coolant condition are serviceable before returning the vehicle to operation. Proper bleeding of the cooling system helps reduce trapped air after replacement.

Denso radiators are manufactured to OE standards and undergo durability and function testing before release. That quality-control process supports consistent performance and fitment for Kia Spectra and Kia Spectra5 cooling system service.