Designed for use with 2015-2020 BMW F80 M3/M4 Skid Plate (HYPERLINK TO MMSD-F80-15), this specially designed diffuser creates a low pressure zone behind the oil cooler to evacuate air for improved cooling capabilities. The diffuser is also easily removable for when more ground clearance is needed. Backed by Mishimoto Lifetime Warranty.

This Part Fits:

Year	Make	Model	Submodel
2015-2018	BMW	M3	Base
2015-2020	BMW	M4	Base
2019-2020	BMW	M4	CS
2016	BMW	M4	GTS