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Denso 221-9577 Radiator

Brand	Denso 221-9577
Fits	Mazda · 8 vehicles

OE experience. Built to meet strict OE standards for fit, performance, and reliability.

Radiator performance. Helps maintain proper engine cooling and function.

Durability tested. Passed rigorous testing for dependable operation under demanding conditions.

Cross-references APDI 8013622, CSF 3916 and DPI Performance Racing Products 13622 for the same application. See all 7.

$230.90Free shipping

In stock · usually ships same day before 1pm CST

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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

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

Year	Make	Model	Position	Notes
2023	Mazda	CX-9	N/A	OE; Radiator
2022	Mazda	CX-9	N/A	OE; Radiator
2021	Mazda	CX-9	N/A	OE; Radiator
2020	Mazda	CX-9	N/A	OE; Radiator
2019	Mazda	CX-9	N/A	—
2018	Mazda	CX-9	N/A	—
2017	Mazda	CX-9	N/A	—
2016	Mazda	CX-9	N/A	—
No rows match your filter.

Directly replaces or cross-references 7 part numbers

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

APDI — 8013622CSF — 3916DPI Performance Racing Products — 13622Mazda — PY8V-15-200OSC — 13622Reach Cooling — 41-13622Spectra Premium — CU13622