CSF 8355 BMW N55 M2 / B58 F-Series Auxiliary Radiator
CSF 8355 BMW N55 M2 / B58 F-Series Auxiliary Radiator is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
The CSF 8355 is an individual auxiliary radiator for the listed N55 F87 M2 and B58 F-series BMW applications. Its two-row, 42mm B-Tube core uses 5mm fins, an integrated frame and a detachable guard.
The N55 M2 uses a single left-side auxiliary radiator. Other listed F-series vehicles may have two or no auxiliary radiators depending on specification, so the actual equipment and original part number must be checked before selecting quantity.
Specifications
| Specification | Details |
|---|---|
| Part number / family | 8355 |
| Quantity | One auxiliary radiator |
| Core | Two-row, 42mm B-Tube |
| Fin height | 5mm |
| Protection | Detachable guard |
| Finish | Black |
| Direct OEM replacement reference | 17118625447 |
| N55 M2 position | Left side |
Fitment and configuration: For original references 17117628057 or 17117600697, CSF specifies appropriate upper/lower brackets and minor duct trimming. Not for the S55 M2 Competition; that application uses a different cooler.
Vehicle applications
| Years | Vehicle | Engine / transmission | Notes |
|---|---|---|---|
| 2016-2018 | BMW F87 M2 | Turbocharged 3.0L L6 | Only Requires 1 |
| 2016-2018 | BMW F30 340i | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2016-2018 | BMW F30 340i xDrive | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2019 | BMW F34 340i GT xDrive | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F32/F33 440i | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F32/F33 440i xDrive | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F36 440i Gran Coupe | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F36 440i xDrive Gran Coupe | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F32/F33 430i | Turbocharged 2.0L L4 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F32/F33 430i xDrive | Turbocharged 2.0L L4 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F36 430i Gran Coupe | Turbocharged 2.0L L4 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2020 | BMW F36 430i xDrive Gran Coupe | Turbocharged 2.0L L4 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2021 | BMW F22/F23 M240i | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
| 2017-2021 | BMW F22/F23 M240i xDrive | Turbocharged 3.0L L6 | BMW: 17-11-8-625-447 Only - See Fitment Notes |
Product FAQs
How many does an N55 M2 need?
The documented N55 M2 configuration uses one left-side auxiliary radiator.
Do all listed B58 F-series cars have two?
No. Equipment can vary, including cars with no auxiliary radiator. Check the VIN, existing equipment and cooler reference.
Is this interchangeable with the M2 Competition radiator?
No. The earlier N55 M2 and later S55 M2 Competition have separate auxiliary-radiator applications.
Related CSF cooling products
Pit Garage is an automotive service and performance parts shop in the Los Angeles area. Ask Pit Garage about selecting this cooling component for your engine, transmission and installed equipment.











