Denso 221-9521 Radiator

Denso Radiator for Genesis Coupe

The Denso 221-9521 radiator is built for 2010-2012 Hyundai Genesis Coupe applications and follows OE-style dimensions for proper cooling system fitment. With a core height of 25.1969, core width of 18.3465, and core thickness of 0.6299, this radiator is sized to match the vehicle’s factory cooling layout. The 1.3898 inlet and 1.3898 outlet diameters support direct hose connection sizing for the listed application.

Key Features

• Fits 2010-2012 Hyundai Genesis Coupe
• Part number 221-9521 for easy identification
• OE-based radiator configuration, tank design, fin pitch, and core dimensions
• Core height: 25.1969, core width: 18.3465, core thickness: 0.6299
• Inlet diameter: 1.3898; outlet diameter: 1.3898
• Built to Denso’s OE manufacturing standards for fitment and cooling performance

Detailed Description

Denso 221-9521 is a replacement radiator engineered for the 2010-2012 Hyundai Genesis Coupe. Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator reflects that experience through factory-matched configuration details, materials, and dimensions. For Genesis Coupe owners searching for a radiator replacement by part number 221-9521, this unit provides the correct size and connection points for the listed vehicle application.

This part cross-references Hyundai 25310-2M300 for the same application. It is also referenced by APDI 8013151 and Spectra Premium CU13151.

What It Helps Address

• Overheating caused by a failing or restricted radiator
• Coolant leaks from a damaged radiator core or tank
• Poor heat transfer from clogged or corroded cooling passages
• Fitment issues when replacing the factory radiator on a Genesis Coupe
• Cooling system service needs on 2010-2012 Hyundai Genesis Coupe models

Installation Notes and Tips

Verify hose connection sizes, mounting points, and surrounding cooling components before installation. Flush the cooling system if contamination, corrosion, or debris is present, and inspect the thermostat, radiator cap, hoses, and fan operation at the same time. Confirm the vehicle application against the listed fitment for 2010-2012 Hyundai Genesis Coupe before final assembly.

Quality Assurance

Denso states that its radiators are built to OE manufacturer standards and undergo durability and function testing before release. That quality process supports consistent cooling performance, fitment accuracy, and dependable operation in demanding driving conditions.