Denso 221-3710 Radiator

Denso Radiator for Hyundai Tucson and Kia Sportage

The Denso 221-3710 radiator is built for 2005-2006 Hyundai Tucson and 2005-2006 Kia Sportage applications with OE-style fitment and cooling performance. It includes an integrated transmission oil cooler and uses core dimensions that match the original cooling package for these vehicles.

Key Features

• OE-style radiator construction from Denso, a supplier to original equipment vehicle manufacturers
• Core height: 25.1870 in., core width: 17.8750 in., core thickness: 0.6250 in.
• Inlet diameter: 1.3750 in.; outlet diameter: 1.3750 in.
• Transmission oil cooler included for automatic transmission cooling
• Built to meet OE specifications for configuration, materials, and fitment
• Part number 221-3710 for easy identification and ordering

Detailed Description

Denso 221-3710 is a replacement radiator engineered for direct-fit service on 2005-2006 Hyundai Tucson and 2005-2006 Kia Sportage models. The radiator’s core dimensions, tank configuration, fin pitch, and material selection are aligned with OE requirements to support stable engine temperature control and consistent heat rejection. For buyers searching for a 2005 Hyundai Tucson radiator, 2006 Kia Sportage radiator, or Denso 221-3710 replacement, this unit matches the application details needed for a proper repair.

This radiator includes a transmission oil cooler, making it suitable for vehicles that route automatic transmission fluid through the radiator for thermal management. Denso’s OE manufacturing background and durability testing help ensure the radiator is built for dependable service under demanding driving conditions.

This part cross-references APDI 8012785 and Spectra Premium CU2785 for the same application.

What It Helps Fix

• Engine overheating caused by a leaking or restricted radiator
• Coolant loss from cracked tanks or damaged core passages
• Transmission temperature issues related to a failed cooler circuit
• Poor heat transfer from clogged or corroded radiator internals
• Fitment problems when replacing the original Tucson or Sportage radiator

Installation Notes and Tips

Verify the vehicle’s radiator configuration before installation, especially on 2005-2006 Hyundai Tucson models noted with an exception for Halla radiator applications. Confirm inlet and outlet hose sizes, transmission cooler line routing, and mounting points before removing the original unit. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant mixture after installation. Bleed air from the system according to the vehicle service procedure to help prevent hot spots and temperature fluctuations.

Quality Assurance

Denso radiators are manufactured to OE-level standards and undergo durability and function testing to support reliable cooling performance and fitment. The 221-3710 radiator is built to deliver consistent service in the 2005-2006 Hyundai Tucson and 2005-2006 Kia Sportage applications.