Denso 221-9538 Radiator

Denso 221-9538 Radiator for Subaru Legacy and Outback

The Denso 221-9538 radiator is built for 2010-2014 Subaru Legacy and 2010-2014 Subaru Outback applications. It uses OE-based dimensions and materials to support proper engine cooling, stable operating temperatures, and consistent fitment.

Key Features

• 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-style radiator configuration for Subaru Legacy and Subaru Outback cooling systems
• Part number: 221-9538

Detailed Description

Denso radiator 221-9538 is engineered around OE specifications for the 2010-2014 Subaru Legacy and 2010-2014 Subaru Outback. Denso supplies radiators to vehicle manufacturers worldwide, and this unit reflects that OE-focused experience through its core dimensions, tank configuration, fin pitch, and material selection. The result is a radiator built to match the cooling system layout and maintain dependable heat transfer under everyday driving and demanding conditions. This part cross-references Subaru 45111-AJ01A for the same application.

What This Radiator Helps Address

• Engine overheating caused by reduced coolant heat dissipation
• Coolant temperature instability during stop-and-go driving
• Leaks or seepage from an aging radiator assembly
• Restricted cooling performance from internal corrosion or clogging
• Fitment issues when replacing the original Subaru Legacy or Subaru Outback radiator

Installation Notes and Tips

Verify inlet and outlet sizing, core dimensions, and mounting layout before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator cap and coolant condition are serviceable. After installation, refill with the correct coolant specification and bleed air from the system according to Subaru service procedures.

Quality Assurance

Denso radiators are manufactured to OE standards and undergo durability and function testing before release. That testing helps ensure reliable cooling performance and fitment for 2010-2014 Subaru Legacy and 2010-2014 Subaru Outback vehicles.