Air-to-water heat exchanger for the 2021+ BMW G8X M2, M3 and M4 with automatic transmission, engineered to keep charge air cool under hard use. The all-aluminum design replaces every plastic component with aluminum end tanks, core and CNC-machined ports, TIG-welded for strength, with strutted tubes that resist bowing and flexing during aggressive cornering. A 23 percent larger core volume and 44 percent more external fin surface area, combined with a dual-pass flow configuration and louvered fins, raise cooling capacity well above stock. Steel rock guards are included to protect the core from debris.
| Type | Performance air-to-water heat exchanger |
| Material | All-aluminum, TIG-welded, with CNC-machined ports |
| Core | 23% larger core volume; 44% more external fin surface area; dual-pass, louvered fins |
| Included | Steel rock guards |
| Fit | Direct fit (automatic transmission) |
| 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 |
