Mishimoto 2015–2020 Skid Plate Replacement Diffuser for BMW F80 M3/M4

This diffuser directs airflow behind the oil cooler to create a low‑pressure zone that evacuates trapped air and improves cooling effectiveness when used with the compatible skid plate on F80 M3 and M4 models. Engineered for straightforward serviceability, the unit is removable to restore additional ground clearance when required while maintaining a precise fit for 2015–2020 BMW F80 M3/M4 applications.

Features:

• Creates low pressure zone behind oil cooler
• Improves oil cooler airflow and cooling
• Removable design for added ground clearance
• Direct fit with MMSD-F80-15 skid plate
• Compatible with 2015–2020 BMW F80 M3/M4

Vehicle Fitment:

• 2015–2018 BMW M3 Base
• 2015–2020 BMW M4 Base
• 2019–2020 BMW M4 CS
• 2016 BMW M4 GTS