Denso 221-9241 Radiator

Denso 221-9241 Radiator for Cadillac Cooling

The Denso 221-9241 radiator is built for Cadillac applications that need OE-style cooling performance, correct fitment, and dependable heat transfer. It is a direct replacement radiator for select Cadillac SRX and Cadillac STS models, including towing and heavy-duty cooling configurations where specified.

Key Features

• Core dimensions: 23.6200 in. height, 21.3000 in. width, and 1.0600 in. thickness
• Transmission oil cooler included for integrated cooling support
• 1.3600 in. inlet diameter and 1.3600 in. outlet diameter
• Built to Denso OE standards for configuration, tank design, fin pitch, and materials
• Designed for reliable engine temperature control in demanding driving conditions
• Part number 221-9241 for accurate ordering and catalog lookup

Detailed Description

Denso radiator part number 221-9241 is engineered using OE supplier experience to match the cooling requirements of select Cadillac vehicles. The radiator core dimensions, tank configuration, and fin design are specified to support proper engine cooling and stable operation. With a transmission oil cooler included, this radiator also supports vehicles that route automatic transmission fluid through the cooling system. This makes the Denso 221-9241 a practical replacement for Cadillac SRX and Cadillac STS models where factory-style cooling performance is required.

This radiator cross-references ACDelco 21710 and 21713 for the same application.

Vehicle Fitment

• Fits 2004-2009 Cadillac SRX, N/A
• Fits 2005 Cadillac STS, N/A
• Fits 2005 Cadillac STS, N/A, w/ Towing Package
• Fits 2006 Cadillac STS, N/A, w/o Towing Package
• Fits 2006 Cadillac STS, N/A, w/o Towing Package (2nd Design)
• Fits 2007-2009 Cadillac STS, N/A, w/ Towing Package w/o Oil Cooler
• Fits 2010 Cadillac STS, N/A, Heavy Duty Cooling (Exc. Oil Cooler)

What This Radiator Helps Address

• Overheating caused by a worn or inefficient radiator
• Coolant leaks from aging radiator tanks or core damage
• Reduced cooling performance under towing or heavy-duty use
• Transmission temperature concerns when the factory cooler circuit is used
• Fitment issues from using the wrong radiator configuration

Installation Notes and Tips

Verify the vehicle’s year, model, and cooling package before installation, especially on Cadillac STS applications with towing package or heavy-duty cooling notes. Confirm inlet and outlet sizing, core dimensions, and transmission cooler routing against the original radiator. Inspect hoses, clamps, and coolant condition during replacement to help ensure a clean installation and proper system operation.

Quality Assurance

Denso supplies radiators to OE vehicle manufacturers worldwide, and this radiator is built to meet rigid OE standards for fitment, durability, and function. Each unit is tested for performance and reliability to support consistent cooling in everyday driving and demanding conditions.