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Denso 221-3171 Radiator
| Brand | Denso 221-3171 |
|---|---|
| Core Height | 15.8120 |
| Core Thickness | 0.6250 |
| Core Width | 27.7500 |
| Inlet Diameter | 1.5000 |
| Outlet Diameter | 1.5620 |
| Transmission Oil Cooler Included | NO |
| Fits | Lexus · 7 vehicles |
OE experience. Built to meet strict manufacturer standards for fit and performance.
Durability tested. Passes rigorous function checks for dependable cooling.
Radiator performance. Helps maintain proper engine cooling and function.
Cross-references APDI 8012782, CSF 3297 and DPI Performance Racing Products 2782 for the same application. See all 8.
Denso Radiator for Lexus GS350, GS450h, GS300
This Denso radiator is built for direct replacement in select Lexus applications, including the 2006 Lexus GS300, 2007 Lexus GS450h, and 2007-2011 Lexus GS350. Part number 221-3171 is engineered around OE-style dimensions and cooling requirements for dependable engine temperature control.
Key Features
- Core height: 15.8120 in.
- Core width: 27.7500 in.
- Core thickness: 0.6250 in.
- Inlet diameter: 1.5000 in.
- Outlet diameter: 1.5620 in.
- No transmission oil cooler included
- OE-style radiator configuration for proper fitment
Product Details
Denso 221-3171 is a radiator designed to match the cooling system requirements of Lexus GS350, GS450h, and GS300 models listed in the fitment data. Denso supplies radiators to OE vehicle manufacturers worldwide, and this unit reflects that experience through controlled core dimensions, tank design, fin pitch, and material selection. The result is a radiator built to support stable coolant flow and consistent heat rejection under everyday driving and demanding operating conditions.
This part cross-references Spectra Premium CU2782 and CSF 3297 for the same application.
What This Radiator Helps Address
- Engine overheating caused by a leaking or restricted radiator
- Coolant loss from cracked tanks or damaged core sections
- Reduced cooling efficiency from age-related wear
- Temperature instability during stop-and-go driving
- Fitment issues when replacing an OE-style Lexus radiator
Installation Notes and Tips
Verify inlet and outlet hose sizes before installation, and confirm that the radiator matches the vehicle’s cooling system layout. Because transmission oil cooler connections are not included, compare the existing setup on the vehicle before ordering. For a clean repair, inspect hoses, clamps, and coolant condition at the same time as the radiator replacement.
Quality Assurance
Denso radiators are manufactured to OE-level standards and undergo durability and function testing before release. That testing process helps ensure consistent performance, fitment, and reliability for Lexus GS350, GS450h, and GS300 applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2011 | Lexus | GS350 | N/A | — |
| 2010 | Lexus | GS350 | N/A | — |
| 2009 | Lexus | GS350 | N/A | — |
| 2008 | Lexus | GS350 | N/A | — |
| 2007 | Lexus | GS350 | N/A | — |
| 2007 | Lexus | GS450h | N/A | — |
| 2006 | Lexus | GS300 | N/A | — |
| No rows match your filter. | ||||