Part #: 221-3403

Denso 221-3403 Radiator

⚙️ 5 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Nissan, Altima
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Overview of the Denso Radiator for Nissan Altima

The Denso 221-3403 radiator is engineered specifically for Nissan Altima models, providing reliable cooling performance. Designed with precise core dimensions and integrated transmission oil cooler, this radiator supports efficient engine operation under various driving conditions.

  • Core Height: 15.75 inches
  • Core Width: 28.687 inches
  • Core Thickness: 0.625 inches
  • Inlet Diameter: 1.375 inches
  • Outlet Diameter: 1.375 inches
  • Includes Transmission Oil Cooler

Detailed Radiator Specifications and Features

The Denso 221-3403 radiator features a core height of 15.75 inches and a width of 28.687 inches, providing ample surface area for heat dissipation. Its 0.625-inch core thickness balances cooling efficiency with durability. Both the inlet and outlet diameters measure 1.375 inches, ensuring compatibility with the Nissan Altima's cooling system hoses. This radiator also includes an integrated transmission oil cooler, which helps maintain optimal transmission fluid temperature, contributing to overall vehicle performance and longevity.

Compatible Nissan Altima Models and Applications

This radiator is compatible with Nissan Altima vehicles requiring a direct replacement radiator with transmission oil cooler integration. It is designed to meet the cooling demands of the Altima’s engine and transmission system, making it suitable for models where the original radiator has failed or requires upgrading.

  • Overheating issues due to radiator core damage or clogging
  • Transmission fluid overheating caused by a faulty cooler
  • Leaks in the radiator or transmission oil cooler
  • Reduced engine cooling efficiency impacting performance
  • Corrosion or physical damage to the original radiator

Installation Notes and Tips for Denso Radiator 221-3403

When installing the Denso 221-3403 radiator on a Nissan Altima, ensure all hose connections match the 1.375-inch inlet and outlet diameters for a secure fit. Properly flush the cooling system before installation to prevent contamination. Verify that the transmission oil cooler lines are correctly connected to maintain transmission fluid cooling. It is recommended to inspect all mounting points and replace any worn hardware during installation.

Quality Assurance and Warranty Information

Denso radiators are manufactured to meet OEM specifications, ensuring reliable performance and durability. The 221-3403 radiator undergoes rigorous quality control testing to verify core integrity and cooling efficiency. While specific warranty terms may vary, Denso typically offers coverage against defects in materials and workmanship, providing confidence in the product’s longevity for Nissan Altima owners.

BrandDenso
Part Number221-3403
Core Height15.7500
Core Thickness0.6250
Core Width28.6870
Inlet Diameter1.3750
Outlet Diameter1.3750
Transmission Oil Cooler IncludedYES

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
2006NissanAltimaN/A
2005NissanAltimaN/A
2004NissanAltimaN/A
2003NissanAltimaN/A
2002NissanAltimaN/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:

8012414

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