Part #: 221-3506

Denso 221-3506 Radiator

⚙️ 3 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, Protege
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Overview of the Denso Radiator for Mazda Protege

The Denso 221-3506 radiator is designed specifically for the Mazda Protege, providing reliable cooling performance. This radiator includes a transmission oil cooler, making it a comprehensive solution for maintaining optimal engine and transmission temperatures.

  • Core Height: 12.812 inches
  • Core Width: 27.187 inches
  • Core Thickness: 1.000 inch
  • Inlet Diameter: 1.125 inches
  • Outlet Diameter: 1.125 inches
  • Includes Transmission Oil Cooler

Detailed Product Description

The Denso 221-3506 radiator features a core measuring 12.812 inches in height, 27.187 inches in width, and 1 inch in thickness, ensuring efficient heat dissipation for the Mazda Protege. Both the inlet and outlet diameters are 1.125 inches, compatible with the vehicle’s cooling system hoses. The integrated transmission oil cooler supports transmission fluid temperature regulation, which is essential for vehicles with automatic transmissions. This radiator is engineered to meet the exact specifications required for the Mazda Protege, ensuring proper fitment and function.

Common Applications and Issues Addressed

  • Overheating engine due to radiator failure
  • Transmission fluid overheating in automatic Mazda Protege models
  • Coolant leaks from damaged or corroded radiator cores
  • Reduced cooling efficiency from clogged or bent radiator fins
  • Replacement of worn or damaged OEM radiator components

Installation Notes and Tips

  • Ensure compatibility with Mazda Protege model year before installation
  • Drain coolant and transmission fluid before removing the old radiator
  • Inspect hoses and clamps for wear and replace if necessary
  • Bleed the cooling system properly after installation to avoid air pockets
  • Check for leaks and proper fluid levels after installation

Quality Assurance and Warranty

Denso radiators are manufactured to meet OEM standards for durability and performance. The 221-3506 radiator undergoes rigorous quality control to ensure reliable operation in the Mazda Protege. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor or region.

BrandDenso
Part Number221-3506
Core Height12.8120
Core Thickness1.0000
Core Width27.1870
Inlet Diameter1.1250
Outlet Diameter1.1250
Transmission Oil Cooler IncludedYES

This part fits 3 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
2003MazdaProtegeAutomaticN/A
2002MazdaProtegeAutomaticN/A
2001MazdaProtegeAutomaticN/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:

8012447

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