Denso 221-9057 Radiator

Denso 221-9057 Radiator Overview

The Denso 221-9057 radiator is built for direct-fit cooling performance in select Chevrolet Colorado and GMC Canyon applications. It combines OE-style dimensions with an integrated transmission oil cooler to support stable engine and transmission temperatures in daily driving and demanding conditions.

Fits 2004-2012 Chevrolet Colorado and 2004-2012 GMC Canyon. This radiator is engineered around OE fitment requirements, with core dimensions and material selection aligned to factory standards for consistent installation and cooling performance.

Key Features

• Part number: 221-9057
• Core height: 18.1102 in.
• Core width: 22.5984 in.
• Core thickness: 1.0236 in.
• Inlet diameter: 1.3110 in.
• Outlet diameter: 1.5354 in.
• Transmission oil cooler included
• OE-style radiator configuration for direct replacement use

Detailed Product Description

Denso supplies radiators to OE vehicle manufacturers worldwide, and this 221-9057 radiator reflects that OE-focused engineering approach. The radiator’s core dimensions, tank design, fin pitch, and materials are selected to match factory requirements, helping maintain proper coolant flow and heat transfer in the Chevrolet Colorado and GMC Canyon. The integrated transmission oil cooler adds support for vehicles that route transmission fluid through the radiator assembly.

For buyers searching for a radiator for 2004-2012 Chevrolet Colorado or a radiator for 2004-2012 GMC Canyon, this unit offers a direct replacement solution with the fitment and dimensional details needed for a clean install. The Denso 221-9057 is also a practical choice when replacing a leaking, clogged, or heat-affected radiator in these trucks.

This part cross-references ACDelco (e.g., 21650, 21742) for the same application.

What This Radiator Helps Address

• Coolant leaks from a damaged or corroded radiator
• Overheating caused by restricted coolant flow or reduced heat dissipation
• Transmission temperature concerns when the radiator-mounted cooler is part of the system
• Fitment issues from using a radiator with incorrect core size or hose connections
• Cooling system service needs on high-mileage Chevrolet Colorado and GMC Canyon trucks

Installation Notes and Tips

Verify hose connection sizes, core dimensions, and transmission cooler routing before installation. Flush the cooling system, inspect hoses and clamps, and confirm the radiator mounts securely in the factory location. After installation, refill with the correct coolant mixture and bleed air from the system according to vehicle service procedures.

Quality Assurance

Denso radiators are built to OE standards and undergo durability and function testing before release. That manufacturing approach supports reliable cooling performance and fitment consistency for the listed Chevrolet Colorado and GMC Canyon applications.