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.
| 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 |
| Part Number | MMTC-SUP-20 |
| 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 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
