Description
Upgrade the intake system of your 2025+ BMW G45 X3 M50 with the MST Performance Cold Air Intake and Turbo Inlet System, engineered specifically for the latest-generation BMW B58 Gen3 3.0L turbocharged engine. The BW-X303 combines a high-flow intake system with a dedicated turbo inlet to improve airflow to the turbocharger while providing a more aggressive induction and turbocharger sound.
Designed as a direct-fit upgrade for the factory intake system, this MST intake is engineered to work with the stock vehicle without requiring an ECU remap. The system is an ideal choice for BMW owners looking to improve intake airflow, throttle response, and engine-bay appearance while retaining straightforward installation.
High-Flow Cold Air Intake Design
The MST intake system is designed to provide the B58 Gen3 engine with a more efficient source of intake air. Its 152mm reusable high-airflow filter provides a large filtration surface while allowing increased airflow through the intake system.
The reusable filter is designed for long-term use and can be cleaned periodically rather than replaced at every service interval.
HDPE Heat-Resistant Airbox
The intake features an HDPE airbox designed to help isolate the intake filter from heat generated within the engine compartment. By providing a dedicated enclosure around the filter, the system helps protect the incoming air from excessive engine-bay heat.
This design is particularly beneficial for a turbocharged performance engine, where maintaining a consistent supply of intake air is important.
Turbo Inlet Upgrade
The included turbo inlet complements the high-flow intake system by providing an upgraded airflow path toward the turbocharger. The combination of the intake and turbo inlet is designed to optimize airflow through the intake tract while maintaining compatibility with the factory vehicle configuration.
The upgraded intake path also allows more of the characteristic turbocharger and induction sounds to be heard, producing a more aggressive sound under acceleration.
Improved Throttle Response and Driving Character
The MST BW-X303 is designed to improve airflow through the factory intake system, helping deliver a more responsive driving experience.
Depending on vehicle conditions and supporting modifications, drivers may notice:
- Improved throttle response
- Increased intake airflow
- More pronounced turbocharger sound
- More aggressive induction noise
- A performance-oriented intake sound under acceleration
Actual performance results can vary depending on vehicle condition, fuel, environmental conditions, and other modifications.
Direct-Fit Installation
The MST BW-X303 is designed as a direct-fit replacement for the factory intake system on the specified BMW G45 X3 M50 application. The system is designed to work with the factory vehicle without requiring an ECU remap.
This makes the BW-X303 a practical upgrade for owners who want improved intake airflow and sound while maintaining the factory engine-management calibration.
Key Features
- MST Performance BW-X303 cold air intake system
- Designed for BMW G45 X3 M50
- Compatible with B58 Gen3 3.0L turbocharged engine
- 152mm reusable high-airflow air filter
- HDPE airbox designed to help reduce heat exposure
- Upgraded turbo inlet
- Improved intake airflow
- Designed for improved throttle response
- More aggressive turbocharger and induction sound
- Direct-fit design
- No ECU remap required
- Reusable filter for long-term serviceability
Filter Maintenance
For optimal airflow and filtration performance, MST recommends maintaining the reusable air filter according to its specified service intervals.
- Clean the air filter: Every 20,000 km
- Replace the air filter: Every 60,000 km
Maintenance intervals may vary depending on driving conditions, environment, and vehicle usage.
Vehicle Fitment
2025+ BMW G45 X3 M50 — B58 Gen3 3.0L
Part Number: BW-X303
Always verify the vehicle model, production year, engine, and intake configuration before ordering.
