MST B58 Gen3 Intake + Turbo Inlet Kit — BMW M340i (G20/G21, 2025); M440i (G22/G23/G26, 2025) (BW-B5816)
$789.80
MST B58 Gen3 Intake + Turbo Inlet Kit — BMW M340i (G20/G21, 2025); M440i (G22/G23/G26, 2025) (BW-B5816)
$789.80
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-B5816
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 Gen3 | 2025 | Verify actual Gen3 engine and inlet. |
| BMW M440i | G22/G23/G26 | B58 Gen3 | 2025 | Verify actual Gen3 engine and inlet. |
Requirements and exclusions
- B58 Gen3 only; not compatible with B58 Gen2.
- This intake is NOT compatible with B58 Gen2 models due to a redesigned factory turbo inlet pipe section.
Fitment requiring confirmation
- MST includes G42 M240i under Gen3, but its Gen2 pages say M240i is unaffected. M240i is withheld pending confirmation.
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.
🛑 WARNING 🛑
This intake is NOT compatible with B58 Gen2 models due to a redesigned factory turbo inlet pipe section.
Features
- HDPE material airbox protects against heat soaking
- 152mm reusable high airflow filter
- Improved performance & better throttle response
- Inner golf-ball surface for optimized airflow
- Direct fit to stock vehicle and no need to remap
- More aggressive turbo sound
- The engine air filter should be cleaned every 20,000 km of usage and should be replaced at 60,000 km of usage
⚠️ 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.
Fitment clarification
B58 Gen3 only. MST provides conflicting information for the G42 M240i; confirm your engine generation and factory inlet design with MST before ordering.