WARMING THE ENGINE…

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Air-to-air core · the last front-mount six
The N55 is the last BMW straight-six with a factory air-to-air front-mount and chassis charge pipes — same architecture as the N54, and the stock core saturates the same way once boost climbs. A larger front-mount is the canonical N55 cooling upgrade; the water-to-air manifold era starts with the S55, not here.
| プラットフォーム | N55 |
|---|---|
| 年式 | 2009–2017 |
| モデル | F30/F31 335i · F32/F33 435i · M235i · F87 M2 (2016–2018) · X3/X4/X5/X6 35i |
| 備考 | Air-to-air front-mount core — the N55 keeps the factory architecture, sized for boost. |
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