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Denso 221-9577 RadiatorOE Quality 60-Day Returns
Part #: 221-9577

Denso 221-9577 Radiator

8 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, CX-9
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Denso Radiator for Mazda CX-9 Cooling

This Denso radiator is built for 2016-2023 Mazda CX-9 applications and is engineered to support stable engine temperature control. Part number 221-9577 is an OE-style replacement focused on fitment, durability, and consistent cooling performance.

Key Features

  • Brand: Denso Radiator
  • Part number: 221-9577
  • Core height: 18.6875 in.
  • Core width: 29.1875 in.
  • Core thickness: 1.0625 in.
  • Inlet diameter: 1.3125 in.
  • Outlet diameter: 1.3125 in.
  • No transmission oil cooler included
  • OE-focused radiator configuration for Mazda CX-9 fitment

Product Details

Denso supplies radiators to OE vehicle manufacturers and applies that OE experience to this replacement radiator. The core dimensions, tank design, fin pitch, and materials are built to meet strict manufacturer standards, helping maintain proper coolant flow and heat transfer in Mazda CX-9 cooling systems. If you are replacing a worn or leaking radiator on a 2016-2023 Mazda CX-9, part number 221-9577 provides a direct-fit cooling solution with the correct inlet and outlet sizing.

This part cross-references Mazda PY8V-15-200 for the same application.

Common Problems This Radiator Can Address

  • Coolant leaks from a damaged or aging radiator
  • Engine overheating caused by reduced heat dissipation
  • Cracked or weakened radiator tanks
  • Restricted coolant circulation from internal wear or contamination
  • Fitment issues when replacing an OE-style Mazda CX-9 radiator

Installation Notes and Tips

Fits 2016-2019 Mazda CX-9, N/A. Fits 2020-2023 Mazda CX-9, N/A. Verify inlet and outlet hose sizes, mounting points, and overall core dimensions before installation. Flush the cooling system, inspect hoses and clamps, and refill with the correct coolant specification after replacement. Confirm there is no transmission oil cooler requirement for your application, since this radiator does not include one.

Quality Assurance

Denso radiators are manufactured to OE-level standards and undergo durability and function testing before release. That testing helps ensure reliable performance under demanding driving conditions and supports consistent cooling system operation in Mazda CX-9 applications.

This part fits 8 vehicles. Search below:

YearMakeModelPositionNotes
2023MazdaCX-9N/AOE; Radiator
2022MazdaCX-9N/AOE; Radiator
2021MazdaCX-9N/AOE; Radiator
2020MazdaCX-9N/AOE; Radiator
2019MazdaCX-9N/A
2018MazdaCX-9N/A
2017MazdaCX-9N/A
2016MazdaCX-9N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

8013622

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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