Denso 221-9580 Radiator

Denso Radiator for Infiniti Q50 and Q60

The Denso 221-9580 radiator is built for Infiniti cooling-system service with OE-style fitment and construction. It is a direct replacement radiator for select Infiniti Q50 and Q60 models, with an integrated transmission oil cooler and inlet/outlet sizing that supports proper coolant flow.

Denso’s radiator line is based on OE supplier experience, with configurations, tank design, fin pitch, core dimensions, and materials aligned to manufacturer standards. Each radiator is tested for durability and function to help maintain dependable engine cooling in demanding driving conditions.

Key Features

• Part number 221-9580
• Radiator with transmission oil cooler included
• Core dimensions: 14.9375 in. height, 28.0625 in. width, 1.5625 in. thickness
• Inlet diameter: 1.3750 in.
• Outlet diameter: 1.3750 in.
• OE-style radiator construction for select Infiniti applications
• Cross-reference example: Spectra Premium CU13631

Detailed Description

Denso 221-9580 is a replacement radiator for 2016-2019 Infiniti Q50, 2020-2024 Infiniti Q50, 2020 Infiniti Q60, 2021 Infiniti Q60, and 2017-2019 Infiniti Q60 applications. It is also a fitment match for 2022 Infiniti Q60 and is built to support the cooling demands of these vehicles with a transmission oil cooler integrated into the unit. For shoppers searching for an Infiniti Q50 radiator or Infiniti Q60 radiator, this part number provides a direct OE-style option with the specified core size and hose connections.

As part of Denso’s radiator line, this unit reflects OE supplier engineering and manufacturing controls. The radiator configuration is designed around proper engine temperature management, stable coolant circulation, and consistent fitment for the listed Infiniti models. Part number 221-9580 is a practical choice when replacing a worn, leaking, or inefficient radiator on the Q50 or Q60 platform.

Common Problems This Radiator Can Address

• Coolant leaks from a damaged or corroded radiator
• Overheating caused by restricted heat transfer
• Transmission cooling concerns related to a failing integrated cooler
• Cracked tanks or weakened core seams
• Poor fitment from an incorrect replacement radiator

Installation Notes and Tips

Verify the vehicle’s year, model, and radiator configuration before installation. Confirm inlet and outlet diameter, core dimensions, and transmission cooler routing against the original unit. Inspect hoses, clamps, and coolant condition during replacement, and flush the cooling system if contamination or debris is present. Proper bleeding of the cooling system helps restore stable operating temperature after installation.

Quality Assurance

Denso radiators are produced to OE-level standards and undergo durability and function testing before release. The brand’s OE supplier background supports consistent fitment and performance for the listed Infiniti applications.