The DeatschWerks 7-904 is a port injection fuel rail for the BMW S58 engine used in the M2, M3, M4 and X3M. It mounts to the factory intake manifold to add a secondary set of port injectors alongside the engine's factory direct injection, increasing total fuel delivery for higher-output builds. This listing is the bare fuel rail on its own, without the plumbing kit supplied with part 7-905 or the plumbing kit and 1000cc injectors supplied with part 7-905-1000.
| Type | Port Injection Fuel Rail |
| Quantity | 1 |
| Part Number | 7-904 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2026 | BMW | M2 | G87 |
| 2021-2026 | BMW | M3 | G80 |
| 2021-2026 | BMW | M4 | G82/G83 |
| 2020-2024 | BMW | X3 M | F97 |
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