Denso 221-9276 Radiator

Denso 221-9276 Radiator for Sonic Cooling Service

The Denso 221-9276 radiator is built for 2012-2016 Chevrolet Sonic applications that need dependable engine cooling and integrated transmission fluid cooling. With OE-style dimensions and materials, it supports proper heat transfer, stable operating temperatures, and consistent fitment for service replacement work.

For Chevrolet Sonic radiator replacement, this unit follows Denso’s OE-focused engineering approach and is built to match the vehicle’s cooling system requirements. The Denso 221-9276 is a direct-fit radiator solution for Sonic models equipped with an automatic transmission cooler in the radiator tank.

Key Features

• Fits 2012-2016 Chevrolet Sonic
• Radiator with transmission oil cooler included
• Core height: 21.6500
• Core width: 15.4300
• Core thickness: 0.6300
• Inlet diameter: 1.3400
• Outlet diameter: 1.3600
• OE-style configuration for fitment and cooling performance

Detailed Product Overview

Denso radiators are supplied to OE vehicle manufacturers, and this radiator reflects that experience through its core dimensions, tank design, fin pitch, and material selection. The 221-9276 is engineered to meet strict durability and function standards, helping maintain proper coolant flow and heat rejection in daily driving and demanding conditions. If you are replacing a Chevrolet Sonic radiator, this part number provides a service-ready option with the transmission cooler already integrated.

This part cross-references Spectra Premium CU13247 and ACDelco 21825 for the same application.

Common Problems This Radiator Can Address

• Engine overheating caused by a failing or restricted radiator
• Coolant leaks from cracked tanks or weakened core seams
• Transmission temperature concerns when the radiator cooler circuit is compromised
• Reduced cooling efficiency from clogged or damaged radiator passages
• Fitment issues when replacing a worn Chevrolet Sonic radiator

Installation Notes and Tips

Verify inlet and outlet hose diameters before installation, and confirm the vehicle is a 2012-2016 Chevrolet Sonic with the correct cooling system layout. Flush the cooling system, inspect hoses and clamps, and check the transmission cooler lines for contamination or wear before connecting the new radiator. After installation, refill with the correct coolant, bleed air from the system, and inspect for leaks at all hose and line connections.

Quality Assurance

Denso builds this radiator using OE-based specifications and subjects it to durability and function testing to support reliable cooling performance. The result is a radiator designed for consistent operation and proper fitment in Chevrolet Sonic service applications.