Denso 221-3122 Radiator

Overview of the Denso Radiator for Lexus LS400

The Denso 221-3122 radiator is engineered specifically for the Lexus LS400, providing reliable cooling performance. Designed with precise core dimensions and integrated transmission oil cooler, this radiator supports optimal engine temperature management.

• Core Height: 15.75 inches
• Core Width: 29.437 inches
• Core Thickness: 1.0 inch
• Inlet Diameter: 1.5 inches
• Outlet Diameter: 1.5 inches
• Includes Transmission Oil Cooler

Detailed Radiator Specifications and Features

This Denso radiator, part number 221-3122, features a core height of 15.75 inches and a width of 29.437 inches, providing ample surface area for heat dissipation. The 1-inch core thickness balances efficient cooling with compact design. Both the inlet and outlet diameters measure 1.5 inches, ensuring compatibility with the Lexus LS400’s cooling system hoses. The integrated transmission oil cooler supports transmission fluid temperature regulation, enhancing overall vehicle performance and longevity.

Applications and Common Issues Addressed

• Prevents engine overheating in Lexus LS400 models
• Replaces damaged or leaking radiators with precise fitment
• Maintains transmission fluid temperature with built-in cooler
• Resolves coolant leaks due to core or tank damage
• Improves cooling efficiency for older or worn radiators

Installation Notes and Tips

When installing the Denso 221-3122 radiator on a Lexus LS400, ensure all hose connections match the 1.5-inch inlet and outlet diameters. Verify the transmission oil cooler lines are properly connected to maintain fluid flow. It is recommended to flush the cooling system before installation to remove debris and prevent contamination. Use manufacturer-recommended coolant and check for leaks after installation.

Quality Assurance and Warranty Information

Denso radiators are manufactured to meet OEM specifications for the Lexus LS400, ensuring reliable fit and function. The 221-3122 radiator undergoes rigorous quality control to maintain durability and performance. Warranty coverage details should be confirmed with the distributor or manufacturer, typically including protection against defects in materials and workmanship.