Denso 221-3168 Radiator

Overview of the Denso Radiator 221-3168 for Lexus and Toyota

The Denso radiator part number 221-3168 is designed specifically for select Lexus and Toyota models, including the RX350, RX450h, and Sienna. This radiator features integrated transmission oil cooling and precise core dimensions to ensure efficient engine temperature management.

• Core Height: 17.687 inches
• Core Width: 30.187 inches
• Core Thickness: 1.060 inches
• Inlet Diameter: 1.375 inches
• Outlet Diameter: 1.375 inches
• Includes Transmission Oil Cooler

Detailed Radiator Specifications and Design

The Denso 221-3168 radiator is engineered with a core height of 17.687 inches and a width of 30.187 inches, providing a substantial surface area for heat dissipation. Its core thickness of 1.060 inches balances durability with efficient coolant flow. Both the inlet and outlet diameters measure 1.375 inches, ensuring compatibility with the vehicle’s cooling system hoses. The inclusion of a transmission oil cooler supports the cooling of transmission fluid, which is critical for maintaining transmission performance and longevity in vehicles like the Lexus RX350 and Toyota Sienna.

Compatible Vehicles and Applications

This radiator is compatible with the following vehicles:

• Lexus RX350
• Lexus RX450h
• Toyota Sienna

It is designed to replace the original radiator in these models, addressing issues such as overheating, coolant leaks, and transmission fluid temperature regulation.

Common Issues Addressed by This Radiator

• Engine overheating due to inefficient heat exchange
• Coolant leaks from damaged or corroded radiator cores
• Transmission fluid overheating affecting transmission performance
• Reduced cooling efficiency from clogged or worn radiators
• Incompatibility with OEM cooling system dimensions

Installation Notes and Tips

When installing the Denso radiator 221-3168, ensure that the inlet and outlet hoses match the 1.375-inch diameter specifications for a secure fit. Verify that the transmission oil cooler lines are properly connected to maintain transmission fluid cooling. It is recommended to inspect all related cooling system components, such as hoses and clamps, during installation to prevent future leaks or failures.

Quality Assurance and Warranty

Denso radiators are manufactured to meet OEM standards for fit, form, and function. The 221-3168 radiator undergoes rigorous quality control to ensure durability and reliable performance in Lexus RX350, RX450h, and Toyota Sienna vehicles. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.