MST B58 Gen2 Turbo Inlet Kit — BMW M340i (G20/G21, 2020–2024); M440i (G22/G23, 2021–2024); M240i (G42, 2022–2026); Z4 M40i (G29, 2020–2026); Toyota GR Supra 3.0 (A90/A91, 2020–2026) (BW-B5806H)
$429.00
MST B58 Gen2 Turbo Inlet Kit — BMW M340i (G20/G21, 2020–2024); M440i (G22/G23, 2021–2024); M240i (G42, 2022–2026); Z4 M40i (G29, 2020–2026); Toyota GR Supra 3.0 (A90/A91, 2020–2026) (BW-B5806H)
$429.00
Please note, MST Performance Intakes/Inlets are NOT CARB COMPLIANT and are for off-road and racing use only. By purchasing an MST Performance intake, you understand that these may only be used for off-road and racing use only for unregistered vehicles. Please check with your local, state, and federal laws to see if these products are legal for use in your area. By purchasing an MST Performance product, you understand and agree to these terms and accept all liability.
Vehicle Fitment
Part number: BW-B5806H
Match every detail in the same row. Listed years follow the stated manufacturer or market basis; an engine code by itself does not confirm fitment. Where no full range is established, confirm the model year and engine-bay layout before ordering.
| Vehicle | Chassis | Engine / specification | Supported years | Application details |
|---|---|---|---|---|
| BMW M340i | G20/G21 | B58 Gen2 | 2020–2024 | Match the listed engine and chassis. |
| BMW M440i | G22/G23 | B58 Gen2 | 2021–2024 | Match the listed engine and chassis. |
| BMW M240i | G42 | B58 Gen2 | 2022–2026 | Match the listed engine and chassis. |
| BMW Z4 M40i | G29 | B58 Gen2 | 2020–2026 | Match the listed engine and chassis. |
| Toyota GR Supra 3.0 | A90/A91 | B58 | 2020–2026 | Match the listed engine and chassis. |
Requirements and exclusions
- OEM-airbox style; verify actual inlet configuration. No Gen3 coverage established.
Confirm fitment with Kies using your model year, engine, production date and a photo of the intake area when a restriction or unconfirmed application is listed.
+ 14
horsepower*
(on tuned vehicles)🛑 PCV HEATER & STORED CODE NOTICE
Please note that the PCV heater is removed when installing this turbo inlet pipe, which will result in a stored error code in the ECU. While this typically does not illuminate the Check Engine Light (CEL), certain vehicle models may display a CEL depending on system sensitivity.
For those running the stock airbox setup, MST now offers a high-flow turbo inlet pipe designed specifically for OEM applications. With a larger diameter than the factory pipe, this upgrade significantly improves airflow, especially beneficial for vehicles with ECU tuning.
When paired with the stock airbox, you can further optimize performance by adding an MST high-flow panel filter or an aftermarket performance air filter to supply the increased airflow required for higher horsepower.
Unlock more power from your stock setup with MST's OEM-Style Turbo Inlet Upgrade!
Features
- Enlarged pipe diameter for increased airflow
- Compatible with both stock and upgraded turbochargers
- OEM-diameter turbo guide vane for optimized flow
- Gains of +10–14 HP on tuned vehicles
- Sharper turbo spool and throttle response
⚠️ Please ensure our product is compatible with your car before placing an order.
If you have any questions, please contact us.
*Due to potential variations in model years (especially transitional years) and different regional specifications by country, we highly recommend contacting us and providing a photo of your engine bay for verification before purchasing to ensure accuracy.