Denso 221-4504 Radiator
OE Quality 60-Day Returns
Denso

Denso 221-4504 Radiator

Brand Denso 221-4504
Core Height 12.9370
Core Thickness 1.0000
Core Width 27.1870
Inlet Diameter 1.3750
Outlet Diameter 1.3750
Transmission Oil Cooler Included YES
Fits Mazda · 2 vehicles

OE experience. Built to meet rigid OE standards for reliable fit and performance.

Durability tested. Passes strict function and durability checks for demanding conditions.

Transmission oil cooler included. Adds integrated cooling support in one radiator assembly.

Cross-references APDI 8011323, CSF 2062 and CSF 2940 for the same application. See all 10.

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Denso 221-4504 Radiator for Mazda 626

The Denso 221-4504 radiator is an OE-style cooling replacement built for 2000-2001 Mazda 626 applications. It combines the correct core dimensions, inlet and outlet sizing, and an integrated transmission oil cooler to support stable engine temperature control and dependable drivability.

Key Features

  • Core height: 12.9370 in.
  • Core width: 27.1870 in.
  • Core thickness: 1.0000 in.
  • Inlet diameter: 1.3750 in.
  • Outlet diameter: 1.3750 in.
  • Transmission oil cooler included
  • OE-focused fitment and construction from Denso

Detailed Description

Denso radiator Part Number 221-4504 is engineered for direct replacement use on the Mazda 626, with dimensions and materials selected to match OE requirements. Denso supplies radiators to vehicle manufacturers worldwide, and this unit reflects that OE experience through controlled core sizing, tank design, fin pitch, and durability testing. For drivers servicing a 2000 Mazda 626 or a 2001 Mazda 626 built through 04/11/01, this radiator provides the cooling capacity and transmission fluid heat exchange needed for normal operation.

This part cross-references Spectra Premium CU2407 and CSF 2062 for the same application.

What It Helps Address

  • Engine overheating from a leaking or restricted radiator
  • Loss of coolant efficiency caused by damaged core passages
  • Transmission temperature concerns when the factory cooler is part of the system
  • Fitment issues from an incorrect radiator size or hose connection diameter
  • Cooling performance decline in a high-mileage Mazda 626

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet diameter, and transmission cooler line routing before installation. Flush the cooling system, inspect hoses and clamps, and confirm the replacement matches the vehicle’s original mounting points and hose locations. For 2001 Mazda 626 vehicles, confirm the build date is on or before 04/11/01.

Quality Assurance

Denso builds this radiator to OE-level standards and subjects it to durability and function testing before release. That process helps ensure consistent cooling performance, proper fitment, and reliable operation in Mazda 626 service applications.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionPositionNotes
2001Mazda626AutomaticN/ATo 04/11/01
2000Mazda626AutomaticN/A—
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
APDI — 8011323CSF — 2062CSF — 2940DPI Performance Racing Products — 2407Mazda — FS1H-15-200AOSC — 2407Reach Cooling — 41-2407Spectra Premium — CU2407TYC Cooling - Archived — 2407Vista Pro — 432340