Denso 221-9450 Radiator

Denso Radiator for Silverado 1500 and Tahoe

Denso 221-9450 is an OE-style radiator built for direct replacement in select Chevrolet Silverado 1500, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL applications. It is configured with an integrated transmission oil cooler and OE-matched dimensions to support proper engine cooling and fitment.

Key Features

• Core height: 33.9764 in.
• Core width: 18.4803 in.
• Core thickness: 1.0630 in.
• Transmission oil cooler included
• Inlet diameter: 1.3125 in.
• Outlet diameter: 1.5625 in.
• Built to Denso OE standards for configuration, materials, and durability testing

Product Details

Denso radiator part number 221-9450 is engineered around OE specifications, including tank design, fin pitch, core dimensions, and material selection. That attention to detail helps maintain proper coolant flow and heat transfer in trucks and SUVs that place higher demands on the cooling system, especially when towing. This radiator cross-references APDI 8013398 for the same application.

Compatible With 2014-2015 Chevrolet Silverado 1500, w/ Towing Package; 2015 Chevrolet Tahoe, w/ Towing Package; 2014-2015 GMC Sierra 1500, w/ Towing Package; 2015 GMC Yukon, w/ Towing Package; and 2015 GMC Yukon XL, w/ Towing Package. It also fits 2016 Chevrolet Silverado 1500, 2016 Chevrolet Tahoe, 2016 GMC Sierra 1500, 2016 GMC Yukon, and 2016 GMC Yukon XL, all with towing package and 1st design with ATF cooling connections on the left side of the radiator.

Common Cooling System Issues

• Coolant leaks from a damaged or aging radiator core or tank
• Overheating caused by reduced heat dissipation
• Transmission temperature concerns when the cooler circuit is compromised
• Fitment problems from an incorrect OE-style replacement radiator
• Cooling performance loss in towing or heavy-load driving

Installation Notes and Tips

Verify the vehicle’s towing package and, for 2016 models, confirm the 1st design with ATF cooling connections on the left side of the radiator before ordering. Compare inlet and outlet sizes, core dimensions, and cooler connection layout against the original unit to ensure correct installation. Flush the cooling system and inspect hoses, clamps, and related components before installing Denso 221-9450.

Quality Assurance

Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator is built using the company’s OE experience and durability testing standards. The result is a replacement radiator designed to meet rigid OE requirements for fitment and dependable cooling performance.