The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15&deg IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment!

Dinan Dinan High Performance Heat Exchanger - 2017-2021 BMW 230i/M240i D780-0002

Specifications:

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This Part Fits:

Year	Make	Model	Submodel	Notes
2017	BMW	230i	Base
2018	BMW	230i	Base
2019	BMW	230i	Base
2020	BMW	230i	Base
2021	BMW	230i	Base
2017	BMW	230i xDrive	Base
2018	BMW	230i xDrive	Base
2019	BMW	230i xDrive	Base
2020	BMW	230i xDrive	Base
2021	BMW	230i xDrive	Base
2017	BMW	330i	Base
2018	BMW	330i	Base
2017	BMW	330i GT xDrive	Base
2018	BMW	330i GT xDrive	Base
2019	BMW	330i GT xDrive	Base
2017	BMW	330i xDrive	Base
2018	BMW	330i xDrive	Base
2019	BMW	330i xDrive	Base
2016	BMW	340i	Base
2017	BMW	340i	Base
2018	BMW	340i	Base
2017	BMW	340i GT xDrive	Base
2018	BMW	340i GT xDrive	Base
2019	BMW	340i GT xDrive	Base
2016	BMW	340i xDrive	Base
2017	BMW	340i xDrive	Base
2018	BMW	340i xDrive	Base
2017	BMW	430i	Base
2018	BMW	430i	Base
2019	BMW	430i	Base
2020	BMW	430i	Base
2017	BMW	430i Gran Coupe	Base
2018	BMW	430i Gran Coupe	Base
2019	BMW	430i Gran Coupe	Base
2020	BMW	430i Gran Coupe	Base
2017	BMW	430i xDrive	Base
2018	BMW	430i xDrive	Base
2019	BMW	430i xDrive	Base
2020	BMW	430i xDrive	Base
2017	BMW	430i xDrive Gran Coupe	Base
2018	BMW	430i xDrive Gran Coupe	Base
2019	BMW	430i xDrive Gran Coupe	Base
2020	BMW	430i xDrive Gran Coupe	Base
2017	BMW	440i	Base
2018	BMW	440i	Base
2019	BMW	440i	Base
2020	BMW	440i	Base
2017	BMW	440i Gran Coupe	Base
2018	BMW	440i Gran Coupe	Base
2019	BMW	440i Gran Coupe	Base
2020	BMW	440i Gran Coupe	Base
2017	BMW	440i xDrive	Base
2018	BMW	440i xDrive	Base
2019	BMW	440i xDrive	Base
2020	BMW	440i xDrive	Base
2017	BMW	440i xDrive Gran Coupe	Base
2018	BMW	440i xDrive Gran Coupe	Base
2019	BMW	440i xDrive Gran Coupe	Base
2020	BMW	440i xDrive Gran Coupe	Base
2017	BMW	M240i	Base
2018	BMW	M240i	Base
2019	BMW	M240i	Base
2020	BMW	M240i	Base
2021	BMW	M240i	Base
2017	BMW	M240i xDrive	Base
2018	BMW	M240i xDrive	Base
2019	BMW	M240i xDrive	Base
2020	BMW	M240i xDrive	Base
2021	BMW	M240i xDrive	Base