Forge Motorsport Carbon Induction Kit for BMW B58 (M240i, M340i, M440i)
Ships from the brand or distributor, usually in 3–7 business days
Make sure this fits your car
Fits: BMW M340i (G20), M440i (G22). Confirm your exact car with us before ordering.
- Shipping at real carrier rates
- 30-day returns on unused parts
- Fitment help before you buy
Forge's full B58 induction kit tackles two parts of the factory intake: the airbox and the inlet hose. The carbon intake limits heat soak and keeps intake air cooler. The silicone inlet hose replaces the factory one, whose resonator and ribs disturb the flow.
What you get
- Carbon fiber intake that replaces the factory airbox parts directly.
- Forge five-ply silicone inlet hose with no resonator or accordion ribs, which handles a tuned engine better than stock.
- Larger airbox-end diameter, up from 85 mm to 90 mm.
- Better induction sound.
- Lifetime warranty from Forge.
Good to know
- Already have the Forge inlet hose? The carbon intake is also sold on its own.
Brand: Forge Motorsport · Part #: FMINDK50
BMW M340i (G20), M440i (G22). Confirm your exact car with us before ordering.
| Model | Chassis | Years | Engine | Fits |
|---|---|---|---|---|
| M140i | F20/F21 | 2016–2019 | Gen 1 B58 | |
| M240i | F22/F23 | 2016–2021 | Gen 1 B58 | |
| 340i | F30/F31/F34 | 2016–2019 | Gen 1 B58 | |
| 440i | F32/F33/F36 | 2017–2020 | Gen 1 B58 | |
| 540i | G30/G31 | 2017–2019 | Gen 1 B58 | |
| 740i | G11/G12 | 2016–2019 | Gen 1 B58 | |
| X3 M40i | G01 | 2018–2019 | Gen 1 B58 | |
| X4 M40i | G02 | 2019 | Gen 1 B58 | |
| 640i GT | G32 | 2018–2019 | Gen 1 B58 | |
| M340i | G20/G21 | 2019–2024 | Gen 2 B58 (TU) | |
| M440i | G22/G23/G26 | 2021–2024 | Gen 2 B58 (TU) | |
| M240i | G42 | 2022–2024 | Gen 2 B58 (TU) | |
| Z4 M40i | G29 | 2019+ | Gen 2 B58 (TU) | |
| GR Supra 3.0 | A90/A91 | 2020+ | Gen 2 B58 (TU) | |
| 540i | G30/G31 | 2020–2023 | Gen 2 B58 (TU) | |
| 740i | G11/G12 | 2020–2022 | Gen 2 B58 (TU) | |
| X3 M40i | G01 | 2020+ | Gen 2 B58 (TU) | |
| X4 M40i | G02 | 2020+ | Gen 2 B58 (TU) | |
| X5 xDrive40i | G05 | 2019–2023 | Gen 2 B58 (TU) | |
| X6 xDrive40i | G06 | 2020–2023 | Gen 2 B58 (TU) | |
| X7 xDrive40i | G07 | 2019–2022 | Gen 2 B58 (TU) | |
| 840i | G14/G15/G16 | 2019+ | Gen 2 B58 (TU) | |
| INEOS Grenadier | Station Wagon/Quartermaster | 2023+ | Gen 2 B58 (TU) | |
| M340i | G20/G21 | 2025+ | Gen 3 B58 (48V) | |
| M440i | G22/G23/G26 | 2025+ | Gen 3 B58 (48V) | |
| M240i | G42 | 2025+ | Gen 3 B58 (48V) |
Not sure? Email sales@b58racing.com with your VIN.
- Ships from the brand or distributor, usually in 3–7 business days.
- Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
- Unused parts can be returned within 30 days. Some items are marked no-refund in their description.
Full details are on our shipping and returns page.
Guides for this part
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On a G20 M340i, G22 M440i or G42 M240i, an intake is mostly about sound. You hear the turbo spool and the blow-off. Power gains are small, and the makers' own claims run from about 9 to 19 hp. For the cheapest change, us
Best B58 Mods, In the Order to Do Them
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Forge Motorsport Carbon Induction Kit, Intake Only - BMW B58 M240i/M340i/M440i
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