A high-flow cold air induction kit for the Gen2 B58 (G-series) motor. It swaps the restrictive factory airbox for a larger 4″ intake pipe and a free-flowing filter, opening up induction airflow and giving the M340i/M240i/M440i a sharper throttle response and a proper induction growl under load. Modest gains on a stock car; the real return shows up once it’s paired with a tune (MHD / bootmod3), where the extra airflow is put to work.
Compatibility
Fits the Gen2 B58 3.0L (G-series), including xDrive:
- BMW G20 M340i / M340i xDrive (Sedan)
- BMW G21 M340i Touring
- BMW G42 M240i / M240i xDrive
- BMW G22 / G23 M440i (Coupe / Convertible)
Does NOT fit
- 2025+ B58 Gen3 cars — the pre-turbo intake pipe was redesigned, so this kit will not fit.
- F-series Gen1 B58 (e.g. F30 340i, F22 M240i, F32 440i) — see our separate B58 Gen1 Cold Air Intake for those.
Specifications
| Type | Cold air / high-flow induction kit |
| Intake pipe | 4″ mandrel alloy |
| Filter | High-flow, washable / reusable |
| Fitment | Direct bolt-on, factory mounting points |
| Engine | B58 Gen2 (B58TU) 3.0L turbo |
| Condition | New |
Notes
- Direct bolt-on install using factory mounting points — no cutting or permanent modification. Basic hand tools, ~30–45 min.
- Pairs directly with a B58 downpipe + charge pipe as a Stage 1/2 hardware package.
- In stock — dispatched in 1–3 business days.
Why EuroSpec?
BMW-focused, fitment-checked before it ships — we ride the same platforms we sell for.
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