Denso 221-4403 Radiator

Overview of Denso Radiator 221-4403 for Infiniti and Nissan

The Denso radiator part number 221-4403 is designed specifically for Infiniti I30 and Nissan Maxima models. This radiator includes a transmission oil cooler, ensuring efficient engine and transmission temperature management for these vehicles.

• Core Height: 15.75 inches
• Core Width: 27.187 inches
• Core Thickness: 1.0 inch
• Inlet Diameter: 1.375 inches
• Outlet Diameter: 1.375 inches
• Includes Transmission Oil Cooler

Detailed Specifications and Features

The Denso 221-4403 radiator features a core measuring 15.75 inches in height, 27.187 inches in width, and 1 inch in thickness, providing optimal surface area for heat dissipation. Both the inlet and outlet diameters are 1.375 inches, matching OEM specifications for proper coolant flow. The integrated transmission oil cooler supports the cooling of transmission fluid, which is critical for maintaining transmission performance and longevity in Infiniti I30 and Nissan Maxima vehicles.

Compatible Vehicles and Applications

This radiator is compatible with the following vehicles:

• Infiniti I30
• Nissan Maxima

It is engineered to replace the original radiator and transmission oil cooler assembly, addressing common cooling system issues such as overheating and transmission fluid temperature regulation.

Common Issues Addressed by Denso Radiator 221-4403

• Engine overheating due to radiator core damage or clogging
• Transmission overheating caused by faulty or missing transmission oil cooler
• Coolant leaks from worn or cracked radiator cores
• Reduced cooling efficiency from deteriorated radiator components
• Incompatible radiator dimensions causing improper fit or coolant flow

Installation Notes and Tips

When installing the Denso radiator 221-4403, ensure all hose connections match the 1.375-inch inlet and outlet diameters for a secure fit. Verify that the transmission oil cooler lines are properly connected to maintain transmission fluid cooling. It is recommended to flush the cooling system before installation to remove debris and prevent contamination. Use OEM or compatible coolant and follow vehicle-specific torque specifications for mounting hardware.

Quality Assurance and Warranty

Denso radiators are manufactured to meet or exceed OEM standards for durability and performance. The 221-4403 radiator undergoes rigorous quality control to ensure reliable operation in Infiniti I30 and Nissan Maxima vehicles. Warranty coverage details should be confirmed with the distributor or manufacturer, typically including protection against defects in materials and workmanship.