Denso 221-9006 Radiator

Denso 221-9006 Radiator for Chevrolet and GMC

The Denso 221-9006 radiator is built for direct-fit cooling system service on select Chevrolet, GMC, and Oldsmobile applications. It combines OE-style dimensions with an integrated transmission oil cooler to support stable engine temperature control and dependable heat exchange.

Key Features

• Core height: 14.8600
• Core width: 26.2590
• Core thickness: 1.0620
• Inlet diameter: 1.3130
• Outlet diameter: 1.5630
• Transmission oil cooler included
• OE-based radiator configuration, tank design, fin pitch, core dimensions, and materials

Detailed Description

Denso part number 221-9006 is a radiator engineered to match OE fitment and cooling performance requirements for vehicles such as the Chevrolet Blazer, Chevrolet S10, GMC Sonoma, GMC Jimmy, and Oldsmobile Bravada. Denso applies its OE supplier experience to the radiator design, using dimensions and materials that align with manufacturer standards for fit and thermal performance. This radiator is a practical choice for drivers replacing a worn or leaking unit on 1996-2004 Chevrolet S10 and GMC Sonoma models, as well as 1996-2001 Chevrolet Blazer, GMC Jimmy, and Oldsmobile Bravada applications.

This part cross-references Spectra Premium CU1826 for the same application.

What This Radiator Helps Address

• Engine overheating caused by reduced coolant flow or internal radiator restriction
• Coolant leaks from aging tanks, seams, or core damage
• Transmission fluid temperature control when the factory cooler is part of the system
• Cooling performance loss from corrosion, clogging, or damaged fins
• Fitment issues when replacing an OE-style radiator on Chevrolet Blazer, Chevrolet S10, or GMC Sonoma models

Installation Notes and Tips

Verify inlet and outlet hose sizes before installation, and confirm that the transmission cooler connections match the vehicle’s original setup. This radiator is listed with fitment for 2004-2005 Chevrolet Blazer, 1996-2004 Chevrolet S10, 1996-2004 GMC Sonoma, 2002-2003 Chevrolet Blazer without trans fluid cooler, 1996-2001 Chevrolet Blazer without heavy duty cooling, 1996-2001 GMC Jimmy, and 1996-2001 Oldsmobile Bravada. Compare the original radiator dimensions and cooler configuration to the replacement unit before installation.

Quality Assurance

Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator is built to the same type of dimensional and durability standards used in OE development. Each unit is subjected to durability and function testing to support reliable cooling performance under demanding operating conditions.