The Mishimoto performance transmission cooler for the 2021+ BMW G8X M2, M3, and M4 keeps the ZF 8HP transmission at optimal temperature behind the S58 engine — important once a tune and bolt-ons push more torque than the stock cooler can handle, which can otherwise cause high oil temps, sluggish shifts, and transmission damage. It delivers a 41% increase in core volume and 17% greater fluid capacity, with internal cooling fins for more fluid-contact surface area and a dual-pass design that keeps fluid in the cooler longer to remove more heat without reducing airflow to components behind it.
| Brand | Mishimoto |
| Type | Performance transmission cooler |
| Platform | BMW G8X (M2 / M3 / M4), ZF 8HP |
| Core | Dual-pass, internal cooling fins |
| vs. Stock | +41% core volume, +17% fluid capacity |
| Warranty | Mishimoto Lifetime Warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2025 | BMW | M2 | Base |
| 2021-2024 | BMW | M3 | Base |
| 2021-2025 | BMW | M3 | Competition |
| 2022-2025 | BMW | M3 | Competition xDrive |
| 2024 | BMW | M3 | CS |
| 2021-2026 | BMW | M4 | Base |
| 2021-2023,2025-2026 | BMW | M4 | Competition |
| 2022-2026 | BMW | M4 | Competition xDrive |
| 2025 | BMW | M4 | CS |
| 2023 | BMW | M4 | CSL |
