BMW G22/G23/G26 4 Series M440i Aluminum Turbo Inlet Pipe Upgrade – High-Flow Design, Fortified Reliability, Improved Turbo Response & Heat Resistance | Fits 2021–2025 (B58 Gen 2 / B58TU Engine)

Transform the responsiveness, reliability, and airflow efficiency of your BMW M440i with the BAVMODS® Aluminum Turbo Inlet Pipe Upgrade, designed for G22 Coupe, G23 Convertible, and G26 Gran Coupe models equipped with the B58 Gen 2 (B58TU) engine.

The factory-installed plastic turbo inlet pipe is a hidden restriction in the B58TU’s intake system — prone to flex, deformation, and flow turbulence under high boost and heat. The BAVMODS® High-Flow Aluminum Turbo Inlet eliminates those issues entirely with a precision-engineered metal design that enhances airflow, reliability, and throttle response.

Featuring an optimized internal flow path and larger diameter, this inlet allows your turbocharger to spool faster, hold consistent boost pressure, and deliver smoother power across the RPM range. The result is sharper throttle response, reduced lag, and a more immediate surge of torque — exactly how the B58TU was meant to perform.

Finished in a matte black, heat-resistant coating, the BAVMODS® inlet looks as premium as it performs, giving your M440i’s engine bay an OEM+ aesthetic upgrade to match its enhanced performance.

Key Features & Benefits

• High-Strength Aluminum Construction – Eliminates cracking and flex common with stock plastic inlets.
• Optimized Flow Geometry – Smooth internal bore increases airflow velocity and efficiency.
• Enhanced Turbo Response – Faster spool, improved low-end torque, and consistent boost control.
• Boost-Tested Durability – Engineered to withstand elevated boost and heat in tuned applications.
• Matte Black OEM+ Finish – Clean, stealthy appearance with high thermal resistance.
• Direct Bolt-On Installation – Installs easily using factory clamps, fittings, and couplers.
• Perfect for Tuned or Stock Engines – Improves reliability and airflow in any setup.

Performance You Can Feel

Experience quicker turbo spool, crisper throttle transitions, and smoother power delivery through every gear. The rigid aluminum construction maintains consistent airflow even under high-pressure boost, helping your B58TU engine breathe more freely and respond instantly.

Whether paired with a performance tune, upgraded intake, or intercooler system, the BAVMODS® Turbo Inlet Pipe ensures that your M440i delivers its full potential — every single drive.

Why It Matters

The turbo inlet pipe is one of the most critical airflow components in the B58TU system. The OEM plastic version, while adequate for comfort-oriented setups, becomes a performance bottleneck under heat or power upgrades.

The BAVMODS® Aluminum Turbo Inlet Pipe Upgrade corrects that flaw with superior durability, smoother flow, and a heat-resistant finish that elevates both reliability and aesthetics. It’s more than a replacement — it’s an upgrade that enhances the character of your M440i from the inside out.

FITMENT: BMW 4 Series – G22 / G23 / G26 (2021–2025) including

• G22 Coupe – M440i (B58 Gen 2 / B58TU Engine)

• G23 Convertible – M440i (B58 Gen 2 / B58TU Engine)

• G26 Gran Coupe – M440i (B58 Gen 2 / B58TU Engine)

Compatible with both RWD and xDrive variants across U.S., European, and Asian markets.

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