Air Intake System (Carbon) for BMW X3 M40i (G01) / X4 M40i (G02)

Specifically for the new generation B58D engine. Power without compromise.

This intake system is designed for BMW G01 X3 M40i and G02 X4 M40i with engine B58D, and developed with a key issue of this model in mind — high thermal load in the engine bay due to the close proximity of the exhaust manifold.

🔧 Key engineering solutions:

• Fully sealed design — prevents hot air from entering the turbine

• Heat shield with gold reflector — minimizes heat radiation from the exhaust manifold

• Maximized airbox volume — space for the front strut brace has been accounted for

• Ø109 mm (4.3”) carbon tube — significantly larger internal volume than the factory pipe

• Custom ISO-certified filter — larger filtration area and higher flow capacity

📦 Kit Contents:

• Carbon Airbox

• High-flow dry cone filter

• Carbon fiber intake tube

• CNC temperature sensor mount

• CNC breather adapter

• CNC turbo flanges (both Pre-LCI and LCI versions included)

• Gold-layered heat shield

• Silicone coupler with OEM clamps

• Laser-cut stainless steel brackets

📈 Expected results:

• Improved turbo response

• Reduced intake air temperature (IAT)

• Clearer induction sound

• Ready for Stage 1–2 tuning

⚠️ Compatible only with B58D engine
❌ Not compatible with B58 or B58C

🛠 Compatibility:
✔️ BMW G01 X3 M40i (with B58D engine)
✔️ BMW G02 X4 M40i (with B58D engine)