Denso 221-9537 Radiator

Denso Radiator for Subaru Outback

The Denso 221-9537 radiator is built for 2011-2014 Subaru Outback applications and follows OE-style dimensions for proper cooling system fitment. With core measurements of 13.3465 in. height, 27.0866 in. width, and 0.6299 in. thickness, this radiator is sized to match the factory layout while supporting consistent engine temperature control.

Key Features

• Fits 2011-2014 Subaru Outback, N/A
• Core height: 13.3465 in.
• Core width: 27.0866 in.
• Core thickness: 0.6299 in.
• Inlet diameter: 1.5906 in.
• Outlet diameter: 1.5827 in.
• OE-focused radiator construction from Denso
• Part number: 221-9537

Detailed Description

Denso 221-9537 is a replacement radiator engineered for Subaru Outback cooling system service on 2011, 2012, 2013, and 2014 models. Denso supplies radiators to original equipment vehicle manufacturers worldwide, and this radiator reflects that OE development background through its configuration, tank design, fin pitch, core dimensions, and material selection. The result is a radiator built to align with factory fitment requirements and cooling performance expectations for the Subaru Outback.

This part cross-references Subaru 45111AJ10A for the same application. The Denso 221-9537 radiator is a direct-fit cooling system component for Subaru Outback owners replacing a worn, leaking, or restricted radiator.

Common Cooling System Issues It Can Address

• Coolant leaks from a damaged or aging radiator core or tank
• Engine temperature rise caused by reduced heat transfer
• Restricted coolant flow from internal buildup or deterioration
• Fitment problems from an incorrect replacement radiator
• Cooling system service needs on a 2011-2014 Subaru Outback

Installation Notes and Tips

Verify inlet and outlet hose sizes, mounting points, and overall core dimensions before installation. Inspect radiator hoses, clamps, and the coolant condition during replacement, and flush the cooling system if contamination is present. After installation, refill with the correct coolant specification and bleed air from the system according to Subaru service procedures.

Quality Assurance

Denso’s OE supplier experience and durability testing support consistent fitment and function. Each radiator is built to meet rigid manufacturer standards for configuration, dimensions, and materials, helping maintain reliable cooling performance under demanding driving conditions. Part number 221-9537 is a Denso radiator for Subaru Outback cooling system repair.