Denso 221-9431 Radiator

Denso Radiator for Ford Mustang

The Denso 221-9431 radiator is built for Ford Mustang applications that require OE-style cooling performance and precise fitment. With core dimensions of 19.5625 in. height, 25.2500 in. width, and 1.4375 in. thickness, it is sized to match the cooling needs of performance-focused Mustang setups.

Denso’s radiator line reflects its OE supplier experience, with configurations, tank design, fin pitch, core sizing, and materials built to meet original manufacturer standards. This Denso radiator for Ford Mustang applications is a direct-fit cooling component for drivers replacing a worn or leaking radiator on 2015-2023 Mustang models, including Performance Package and SVT Performance Pack variants.

Key Features

• Part number: 221-9431
• Core height: 19.5625 in.
• Core width: 25.2500 in.
• Core thickness: 1.4375 in.
• Inlet diameter: 1.5000 in.
• Outlet diameter: 1.5000 in.
• No transmission oil cooler included
• OE-style radiator construction for consistent fitment

Product Details

The Denso 221-9431 radiator is engineered for Ford Mustang cooling systems that demand stable engine temperature control under street and performance use. It is compatible with 2015-2023 Ford Mustang models, including 2015-2020 Mustang Performance Package, 2016 Mustang Performance Package (to 10/08/2015), 2017-2020 Mustang Performance Package, and 2021-2023 Mustang High Performance LS Package with SVT Performance Pack. This radiator also cross-references Ford FR3Z 8005-B and FR3Z 8005-G for the same application.

Built to Denso’s OE standards, the radiator uses validated core dimensions and materials to support proper coolant flow and heat transfer. The 221-9431 part number is a practical replacement choice when restoring cooling efficiency on a Ford Mustang radiator application.

Common Problems This Radiator Can Address

• Coolant leaks from a damaged or aging radiator
• Overheating caused by reduced heat dissipation
• Restricted coolant flow from internal wear or blockage
• Fitment issues from an incorrect replacement radiator
• Cooling system performance loss on performance-package Mustang models

Installation Notes

Verify radiator dimensions, inlet and outlet size, and transmission cooler requirements before installation. This unit does not include a transmission oil cooler, so confirm your vehicle’s cooling system configuration matches the part before removal of the original radiator. For best results, inspect hoses, clamps, and coolant condition during replacement on Ford Mustang applications.

Quality Assurance

Denso supplies radiators to OE vehicle manufacturers worldwide, and its radiator products are tested for durability and function before release. The 221-9431 is built to meet OE manufacturer standards for fitment and cooling performance.