The Mishimoto automatic transmission cooler for the 2020-2025 Toyota GR Supra 3.0L — and BMW B58 models including the M340i and Z4 — supplements the factory liquid-to-air cooler on the ZF 8HP transmission to handle the heat of track days and spirited driving. Mishimoto expanded the core for a 162% increase in volume and 412% greater external fin surface area while keeping similar system fluid pressures, and added internal cooling fins for maximum heat transfer. The lightweight aluminum tube-and-fin core is finished in a sleek silver powder coat.
| Brand | Mishimoto |
| Type | Supplemental automatic transmission cooler |
| Transmission | ZF 8HP (B58 platform) |
| Core | Aluminum tube-and-fin, internal cooling fins |
| vs. Stock | +162% core volume, +412% external fin area |
| Finish | Silver powder coat |
| Warranty | Mishimoto Lifetime Warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2025 | BMW | M340i | Base |
| 2020-2021 | BMW | M340i xDrive | Base |
| 2020 | BMW | Z4 | M40i First Edition |
| 2020-2021 | BMW | Z4 | sDrive M40i |
| 2019-2021 | BMW | Z4 | sDrive30i |
| 2024 | Toyota | GR Supra | 45th Anniversary Edition |
| 2021-2022 | Toyota | GR Supra | A91 Edition |
| 2023 | Toyota | GR Supra | A91-MT Edition |
| 2020-2022 | Toyota | GR Supra | Base |
| 2020 | Toyota | GR Supra | Launch Edition |
| 2020-2022 | Toyota | GR Supra | Premium |
