Smooth and optimise airflow to your turbo with the MMX Silicone Intake Hose for BMW B58 engines, designed for the F-Series M140i, M240i, 340i and 440i. This direct replacement for the restrictive factory plastic ‘bellows’ pipe delivers a cleaner, more efficient airflow path — improving throttle response, enhancing induction noise, and refining engine bay aesthetics.
Constructed from high-quality reinforced silicone, the hose maintains rigidity under heat and load while allowing just the right level of compliance for natural engine movement. This ensures durability without stressing the intake system.
The MMX B58 intake hose integrates seamlessly with the OEM airbox, MMR intake, or other aftermarket intakes, making it a versatile and effective upgrade. On its own it offers noticeable improvements, but when paired with an MMX high-flow air filter or full intake system, performance and sound gains are maximised.
Key Features
Large-diameter smooth-flowing silicone construction for improved airflow
Replaces restrictive OEM plastic ‘bellows’ pipe
Reinforced for strength and resistance to deformation under load/heat
Allows for natural engine movement without intake damage
Increases performance and induction noise
Compatible with OEM airbox, MMR intake, or aftermarket intakes
Complete kit with everything required for installation
