OE Quality
60-Day Returns

Denso 221-9354 Radiator
Overview of the Denso Radiator 221-9354 for BMW 5 and 6 Series
The Denso radiator part number 221-9354 is designed specifically for select BMW 5 Series and 6 Series models, including the 550i, 550i GT, 550i GT xDrive, 550i xDrive, 650i, 650i Gran Coupe, 650i xDrive, and 650i xDrive Gran Coupe. This radiator provides reliable cooling performance tailored to the engine requirements of these vehicles.
- Core Height: 23.23 inches
- Core Width: 12.13 inches
- Core Thickness: 1.06 inches
- Inlet Diameter: 0.64 inches
- Outlet Diameter: 0.64 inches
- Transmission Oil Cooler: Not included
Technical Details and Specifications
The Denso 221-9354 radiator features a core measuring 23.23 inches in height, 12.13 inches in width, and 1.06 inches in thickness, providing an optimal surface area for heat dissipation. Both the inlet and outlet diameters are 0.64 inches, ensuring compatibility with the cooling system hoses of the specified BMW models. This radiator does not include a transmission oil cooler, which is important to note for vehicles requiring separate transmission cooling components.
Compatible BMW Models and Applications
This radiator is compatible with a range of BMW 5 Series and 6 Series vehicles, including the 550i and 650i variants with xDrive and Gran Coupe configurations. It is engineered to meet the cooling demands of these specific models, maintaining engine temperature stability under various driving conditions.
Common Issues Addressed by the Denso Radiator 221-9354
- Engine overheating due to radiator core damage or clogging
- Coolant leaks from worn or corroded radiator components
- Reduced cooling efficiency impacting engine performance
- Failure of radiator causing engine temperature fluctuations
- Replacement of OEM radiator to restore factory cooling specifications
Installation Notes and Tips
When installing the Denso radiator 221-9354, ensure all coolant is properly drained before removal of the old radiator. Verify that the inlet and outlet hose diameters match the vehicle’s cooling system connections. Inspect and replace any worn hoses or clamps during installation to prevent leaks. Bleed the cooling system thoroughly after installation to remove air pockets and ensure optimal coolant flow.
Quality Assurance and Warranty Information
Denso radiators are manufactured to meet OEM standards for fit, form, and function. The 221-9354 radiator undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship, providing confidence in the product’s longevity and service life.
| Brand | Denso |
| Part Number | 221-9354 |
| Core Height | 23.2300 |
| Core Thickness | 1.0600 |
| Core Width | 12.1300 |
| Inlet Diameter | 0.6400 |
| Outlet Diameter | 0.6400 |
| Transmission Oil Cooler Included | NO |
This part fits 48 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2017 | BMW | 550i GT xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2017 | BMW | 650i | N/A | Auxiliary (Charge Air Cooling) |
| 2017 | BMW | 650i Gran Coupe | N/A | Auxiliary (Charge Air Cooling) |
| 2017 | BMW | 650i xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2017 | BMW | 650i xDrive Gran Coupe | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 550i | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 550i GT xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 550i xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 650i | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 650i Gran Coupe | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 650i xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2016 | BMW | 650i xDrive Gran Coupe | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 550i | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 550i GT | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2015 | BMW | 550i GT xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 550i xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 650i | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 650i Gran Coupe | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 650i xDrive | N/A | Auxiliary (Charge Air Cooling) |
| 2015 | BMW | 650i xDrive Gran Coupe | N/A | Auxiliary (Charge Air Cooling) |
| 2014 | BMW | 550i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 550i GT | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 550i GT xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 550i xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 650i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 650i Gran Coupe | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 650i xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2014 | BMW | 650i xDrive Gran Coupe | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 550i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 550i GT | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 550i GT xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 550i xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 650i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 650i Gran Coupe | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 650i xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2013 | BMW | 650i xDrive Gran Coupe | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2012 | BMW | 550i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2012 | BMW | 550i GT | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2012 | BMW | 550i GT xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2012 | BMW | 550i xDrive | N/A | |
| 2012 | BMW | 650i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2012 | BMW | 650i xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2011 | BMW | 550i | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2011 | BMW | 550i GT | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2011 | BMW | 550i GT xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2011 | BMW | 550i xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2010 | BMW | 550i GT | N/A | Auxiliary Radiator (Charge Air Cooling) |
| 2010 | BMW | 550i GT xDrive | N/A | Auxiliary Radiator (Charge Air Cooling) |
* 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.