OE Quality
60-Day Returns

Denso 221-3169 Radiator
Overview of Denso Radiator for Lexus IS250 and IS350
The Denso radiator part number 221-3169 is designed specifically for Lexus IS250 and IS350 models. Engineered to meet OEM specifications, this radiator ensures efficient engine cooling and reliable performance under various driving conditions.
- Core Height: 14.75 inches
- Core Width: 27.937 inches
- Core Thickness: 0.625 inches
- Inlet Diameter: 1.5 inches
- Outlet Diameter: 1.5 inches
- Transmission Oil Cooler: Not included
Detailed Radiator Specifications and Features
This Denso radiator features a core height of 14.75 inches and a width of 27.937 inches, providing ample surface area for heat dissipation. The core thickness of 0.625 inches supports efficient coolant flow and heat exchange. Both the inlet and outlet diameters measure 1.5 inches, ensuring compatibility with the Lexus IS250 and IS350 cooling system hoses. Note that this radiator does not include a transmission oil cooler, so it is intended for vehicles with separate transmission cooling systems.
Compatible Vehicles and Application
This radiator is compatible with the following Lexus models:
- Lexus IS250
- Lexus IS350
It is designed to replace the original radiator and maintain optimal engine temperature, preventing overheating and supporting engine longevity.
Common Issues Addressed by This Radiator
- Engine overheating due to radiator leaks or blockages
- Coolant loss from damaged or corroded radiator cores
- Reduced cooling efficiency from worn or clogged radiator fins
- Incompatible radiator dimensions causing installation issues
- Failure of OEM radiator leading to engine performance problems
Installation Notes and Tips
When installing the Denso radiator 221-3169, ensure the inlet and outlet hoses match the 1.5-inch diameter specifications. Verify that the radiator core dimensions fit the engine bay of the Lexus IS250 or IS350. It is recommended to flush the cooling system before installation to remove debris and contaminants. Properly bleed the cooling system after installation to avoid air pockets that can reduce cooling efficiency.
Quality Assurance and Warranty
Denso radiators are manufactured to meet strict quality standards and OEM specifications. This radiator undergoes rigorous testing to ensure durability and performance. While specific warranty details may vary, Denso typically offers a limited warranty covering defects in materials and workmanship. Consult the product documentation or supplier for exact warranty terms related to part number 221-3169.
| Brand | Denso |
| Part Number | 221-3169 |
| Core Height | 14.7500 |
| Core Thickness | 0.6250 |
| Core Width | 27.9370 |
| Inlet Diameter | 1.5000 |
| Outlet Diameter | 1.5000 |
| Transmission Oil Cooler Included | NO |
This part fits 20 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2015 | Lexus | IS350 | C | N/A | |
| 2015 | Lexus | IS350 | C F Sport | N/A | |
| 2014 | Lexus | IS350 | C | N/A | |
| 2014 | Lexus | IS350 | C F Sport | N/A | |
| 2013 | Lexus | IS250 | N/A | ||
| 2013 | Lexus | IS350 | N/A | ||
| 2012 | Lexus | IS250 | N/A | ||
| 2012 | Lexus | IS350 | N/A | ||
| 2011 | Lexus | IS250 | N/A | ||
| 2011 | Lexus | IS350 | N/A | ||
| 2010 | Lexus | IS250 | N/A | ||
| 2010 | Lexus | IS350 | N/A | ||
| 2009 | Lexus | IS250 | N/A | ||
| 2009 | Lexus | IS350 | N/A | ||
| 2008 | Lexus | IS250 | N/A | ||
| 2008 | Lexus | IS350 | N/A | ||
| 2007 | Lexus | IS250 | N/A | ||
| 2007 | Lexus | IS350 | N/A | ||
| 2006 | Lexus | IS250 | N/A | ||
| 2006 | Lexus | IS350 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.