Denso 221-9008 Radiator

Denso Radiator for GM Trucks and SUVs

The Denso 221-9008 radiator is built for direct-fit cooling performance in select Cadillac, Chevrolet, and GMC applications. It uses OE-based dimensions and materials to support consistent engine temperature control in demanding driving conditions.

• Core height: 19.0160
• Core width: 28.2670
• Core thickness: 1.0000
• Inlet diameter: 1.3180
• Outlet diameter: 1.5740
• No transmission oil cooler included
• OE-style radiator construction for fitment accuracy

OE-Style Cooling Performance

Denso applies OE supplier experience to this radiator design, with tank, fin pitch, core dimensions, and material selection aligned to original equipment standards. The result is a radiator engineered for reliable heat transfer and stable cooling performance in vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade. Part number 221-9008 is also cross-referenced to ACDelco 21647 and Spectra Premium CU2334 for the same application.

Vehicle Fitment

• Fits 2002-2004 Cadillac Escalade, w/o Auxiliary A/C, w/o Engine Oil Cooler
• Fits 1999-2004 Chevrolet Silverado 1500
• Fits 2004 Chevrolet Silverado 1500, w/o Engine Oil Cooler
• Fits 2004 Chevrolet Silverado 1500, Optional Cooling
• Fits 2000-2004 Chevrolet Suburban 1500, w/o Auxiliary A/C, w/o Engine Oil Cooler
• Fits 2000-2004 Chevrolet Tahoe, w/o Auxiliary A/C, w/o Engine Oil Cooler
• Fits 1999-2004 GMC Sierra 1500
• Fits 2004 GMC Sierra 1500, Optional
• Fits 2000-2004 GMC Yukon, w/o Auxiliary A/C, w/o Engine Oil Cooler
• Fits 2000-2004 GMC Yukon XL 1500, w/o Auxiliary A/C, w/o Engine Oil Cooler
• Fits 1999-2000 Chevrolet Silverado 2500
• Fits 1999-2000 GMC Sierra 2500

Common Cooling Issues Addressed

• Overheating caused by a leaking or restricted radiator
• Coolant loss from cracked tanks or damaged core passages
• Temperature instability during towing or stop-and-go driving
• Reduced cooling efficiency from an aging factory radiator
• Fitment problems when replacing the original radiator on GM full-size trucks and SUVs

Installation Notes

Verify radiator dimensions, inlet and outlet sizes, and cooling package details before installation. This radiator does not include a transmission oil cooler, so confirm your vehicle is equipped for a radiator without that feature. For 2004 Chevrolet Silverado 1500 and 2004 GMC Sierra 1500 applications, check the notes for optional cooling and engine oil cooler requirements.

Quality Assurance

Denso radiators are produced to meet OE manufacturer standards and are subjected to durability and function testing before release. That OE-focused validation supports dependable fitment and cooling performance across the listed Cadillac Escalade, Chevrolet Silverado 1500, and GMC Sierra 1500 applications.