Denso 221-9429 Radiator

Overview of the Denso Radiator 221-9429 for Chevrolet and GMC Trucks

The Denso Radiator part number 221-9429 is designed specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. This radiator features precise core dimensions and includes a transmission oil cooler to support optimal engine and transmission performance.

• Core Height: 33.4646 inches
• Core Width: 28.4882 inches
• Core Thickness: 1.8898 inches
• Transmission Oil Cooler Included
• Inlet Diameter: 1.8125 inches
• Outlet Diameter: 2.0625 inches

Detailed Specifications and Features

The Denso 221-9429 radiator is engineered with a core height of 33.4646 inches and a core width of 28.4882 inches, providing a substantial surface area for efficient heat dissipation. The core thickness of 1.8898 inches ensures durability and effective coolant flow. This radiator also includes an integrated transmission oil cooler, which helps maintain transmission fluid temperature, enhancing transmission longevity and performance. The inlet and outlet diameters of 1.8125 inches and 2.0625 inches respectively are designed to match OEM specifications for seamless installation and optimal coolant circulation.

Compatible Vehicles and Applications

This radiator is compatible with the following heavy-duty truck models:

• Chevrolet Sierra 2500 HD
• Chevrolet Sierra 3500 HD
• Chevrolet Silverado 2500 HD
• Chevrolet Silverado 3500 HD
• GMC Sierra 2500 HD
• GMC Sierra 3500 HD

Common Issues Addressed by the Denso Radiator 221-9429

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

Installation Notes and Tips

When installing the Denso radiator 221-9429, ensure that all hose connections match the specified inlet and outlet diameters for a secure fit. Verify that the transmission oil cooler lines are properly connected to maintain transmission cooling. It is recommended to flush the cooling system before installation to remove any debris or contaminants. Use OEM or compatible coolant to prevent corrosion and maintain system integrity. Proper torque specifications should be followed for mounting bolts to avoid damage.

Quality Assurance and Warranty Information

Denso radiators are manufactured to meet or exceed OEM standards for fit, form, and function. The 221-9429 radiator undergoes rigorous quality control testing to ensure durability and reliable performance under heavy-duty conditions. While specific warranty details may vary, Denso typically offers a limited warranty covering defects in materials and workmanship. Consult the product documentation or supplier for exact warranty terms.