Denso 221-9046 Radiator

Denso Radiator for GM Trucks and SUVs

Denso radiator Part Number 221-9046 is built for select Chevrolet, GMC, and Cadillac applications that need dependable engine cooling and OE-style fitment. With an integrated transmission oil cooler and dimensions matched to the original design, this radiator supports stable temperature control in demanding driving conditions.

Key Features

• Core height: 17.2441 in., core width: 34.0157 in., core thickness: 1.2598 in.
• Transmission oil cooler included for vehicles that require it
• Inlet diameter: 1.3386 in.; outlet diameter: 1.5748 in.
• OE-based radiator configuration for proper fitment and cooling performance
• Built to Denso’s durability and function testing standards
• Part number 221-9046 for easy identification and ordering

Detailed Description

Denso uses OE supplier experience to produce radiators that follow original manufacturer standards for tank design, fin pitch, core size, and materials. That attention to detail helps this radiator deliver consistent cooling performance and reliable fitment on applications such as the Chevrolet C1500, Chevrolet Tahoe, GMC K1500, and Cadillac Escalade. If you are replacing a worn or leaking radiator on a GM truck or SUV, Denso 221-9046 is a direct-fit style solution for the listed vehicles.

This part cross-references Spectra Premium CU2317 and CSF 3109 for the same application.

What This Radiator Helps Address

• Engine overheating caused by a failing radiator core
• Coolant leaks from cracked or corroded radiator tanks
• Transmission temperature concerns on vehicles with an integrated cooler
• Reduced cooling efficiency from damaged fins or restricted flow
• Fitment issues when replacing an OE-style GM radiator

Installation Notes and Tips

Verify the vehicle’s cooling configuration before installation, especially oil cooler and alternator-related notes listed in the fitment data. This radiator fits 1996 Chevrolet C1500, w/ Trans Cooler (w/o Oil Cooler); 1997-1999 Chevrolet Tahoe, w/o Oil Cooler; 1999 GMC K1500, A/C; and 1999 Cadillac Escalade, w/o Oil Cooler. Confirm inlet and outlet hose sizes, inspect hoses and clamps, and flush the cooling system before installing the replacement radiator.

Quality Assurance

Denso radiators are engineered to OE standards and undergo durability and function testing before release. That manufacturing approach supports consistent cooling performance and dependable fitment for the listed Chevrolet, GMC, and Cadillac applications.