Denso 221-3101 Radiator

Overview of the Denso Radiator for Toyota Sienna

The Denso radiator part number 221-3101 is designed specifically for Toyota Sienna models, 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: 17.687 inches
• Core Width: 28.250 inches
• Core Thickness: 1.000 inch
• Inlet Diameter: 0.937 inches
• Outlet Diameter: 0.937 inches
• Includes Transmission Oil Cooler

Detailed Product Description

The Denso 221-3101 radiator features a core measuring 17.687 inches in height, 28.250 inches in width, and 1.000 inch in thickness, ensuring efficient heat dissipation for the Toyota Sienna. Both the inlet and outlet diameters are 0.937 inches, compatible with the vehicle’s cooling system hoses. The integrated transmission oil cooler supports the transmission’s thermal management, helping to extend transmission life and maintain smooth operation under various driving conditions.

Applications and Problem Solving

This radiator is compatible with Toyota Sienna models requiring a direct replacement radiator with transmission oil cooling capabilities. It addresses several common issues including:

• Overheating due to radiator core damage or clogging
• Transmission overheating from inadequate cooling
• Leaks or cracks in the radiator core or tanks
• Reduced cooling efficiency from corrosion or wear
• Failure of OEM radiator components affecting engine performance

Installation Notes and Tips

• Ensure the radiator core dimensions match the vehicle’s specifications for proper fitment
• Check hose diameters (0.937 inches) for compatibility with inlet and outlet connections
• Drain coolant and transmission fluid before removal to avoid spills
• Inspect and replace any worn hoses or clamps during installation
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

Denso radiators are manufactured to meet or exceed OEM standards for durability and performance. The 221-3101 radiator undergoes rigorous quality control to ensure reliable operation in Toyota Sienna vehicles. Warranty coverage details should be confirmed with the distributor or installer, as it may vary by region.