BMW F32/F33/F36 4 Series 440i Aluminum Turbo Inlet Pipe Upgrade – High-Flow Design, Fortified Reliability, Improved Turbo Response & Heat Resistance | Fits 2016–2020 (B58 Gen 1 Engine)

Experience a smoother, faster, and more responsive drive with the BAVMODS® Aluminum Turbo Inlet Pipe Upgrade, engineered exclusively for BMW 4 Series 440i models equipped with the B58 Gen 1 engine.

From the factory, BMW equips the 440i with a restrictive plastic turbo inlet pipe that can flex or crack under heat and boost pressure — especially in tuned or spirited setups. The BAVMODS® High-Flow Aluminum Turbo Inlet Pipe eliminates that weak point with a precision-formed, high-strength metal body that increases airflow capacity, improves throttle response, and ensures long-term reliability.

By optimizing the internal flow path, this upgrade reduces restriction and turbulence, helping the turbo spool quicker and hold consistent boost pressure throughout the rev range. The result is a sharper, more responsive powerband and a noticeable improvement in drivability — all while maintaining OEM-level refinement.

Its matte black, heat-resistant coating delivers a clean, stealthy aesthetic that complements the 440i’s performance-focused design. Whether you’re running stock boost levels or pushing tuned power, this inlet pipe upgrade ensures your B58 breathes better and performs stronger.

Key Features & Benefits

• High-Strength Aluminum Construction – Prevents cracking, deformation, and leaks common with factory plastic inlets.
• Optimized Internal Flow Path – Increases airflow velocity for faster turbo response.
• Boost-Tested Performance – Handles elevated boost levels without flex or restriction.
• Improved Throttle Response – Noticeably quicker pedal feedback and midrange torque.
• Matte Black OEM+ Finish – Sleek, heat-resistant coating for a professional engine bay appearance.
• Direct Bolt-On Fitment – Installs easily using existing factory connections and hardware.
• Designed for Tuned & Stock Applications – Reliable, consistent performance in any setup.

Performance You Can Feel

Expect faster turbo spool-up, reduced lag, and smoother throttle transitions across the RPM range. The BAVMODS® Aluminum Turbo Inlet Pipe delivers a more direct and unrestricted airflow to the turbocharger, allowing your B58 engine to reach boost targets with greater precision and consistency.

When paired with a high-flow intake or tune, you’ll unlock an even more responsive and confident driving feel — transforming the way your 440i delivers power.

Why It Matters

The turbo inlet pipe is one of the most critical airflow components in your B58’s intake system. The stock plastic unit may suffice for factory boost, but under performance conditions, it quickly becomes a liability — restricting flow and risking cracks or leaks.

The BAVMODS® Aluminum Turbo Inlet Pipe solves those issues permanently. Built to outlast and outperform the factory design, it combines engineering precision, reliability, and visual refinement in one essential upgrade.

FITMENT: BMW 4 Series – F32 / F33 / F36 (2016–2020) including

• F32 Coupe – 440i (B58 Gen 1 Engine)

• F33 Convertible – 440i (B58 Gen 1 Engine)

• F36 Gran Coupe – 440i (B58 Gen 1 Engine)

• Compatible with both RWD and xDrive variants.

Applies across U.S., European, and Asian market configurations.

Please refer to the “Fitment” section in the product description for compatibility details.