BMW G20/G21/G28 3 Series M340i Aluminum Turbo Inlet Pipe Upgrade – High-Flow Design, Fortified Reliability, Improved Turbo Response & Heat Resistance | Fits 2020–2025 (B58 Gen 2 / B58TU Engine)

Elevate the performance and reliability of your BMW M340i with the BAVMODS® Aluminum Turbo Inlet Pipe Upgrade, precision-engineered for G20 Sedan, G21 Touring, and G28 Long-Wheelbase 3 Series models equipped with the B58 Gen 2 (B58TU) engine.

The factory-installed plastic turbo inlet is a known restriction in the B58TU airflow system — prone to flexing and heat deformation under boost. The BAVMODS® High-Flow Aluminum Turbo Inlet replaces that weak link with a rigid, precision-machined metal construction, offering smoother airflow, increased reliability, and sharper throttle response.

By increasing the internal bore diameter and refining the airflow geometry, this inlet pipe reduces turbulence and backpressure before the turbocharger — improving spool speed, boost stability, and power consistency across the rev range.

Its matte black, heat-resistant finish adds a stealthy, OEM+ appearance to your engine bay while resisting corrosion and thermal stress. Whether you’re running a stock setup or a high-performance tune, this upgrade ensures your B58TU engine performs as cleanly and efficiently as it was engineered to.

Key Features & Benefits

• High-Strength Aluminum Construction – Replaces fragile OEM plastic to prevent cracking or boost loss.
• Optimized Airflow Path – Smoother, enlarged internal bore increases turbocharger efficiency.
• Enhanced Turbo Response – Quicker spool, sharper throttle, and improved midrange torque.
• Boost-Tested Reliability – Engineered to handle elevated boost pressures in tuned setups.
• Matte Black OEM+ Finish – Sleek, heat-resistant coating for a refined, factory-plus look.
• Plug-and-Play Fitment – Direct bolt-on installation using OEM connections and fittings.
• Tuned or Stock Ready – Performs flawlessly in both daily and performance builds.

Performance You Can Feel

The BAVMODS® Turbo Inlet Pipe unlocks the true potential of the B58TU engine. Expect faster turbo spool, cleaner throttle transitions, and more consistent boost response across the powerband.

By eliminating the restrictive stock inlet, your M340i gains a smoother and more predictable delivery of power — especially noticeable during acceleration and gear changes.

Why It Matters

BMW’s factory plastic inlet pipe was designed with comfort and emissions in mind, not maximum performance. Under real-world heat and boost conditions, it can flex or even collapse — robbing your turbo of efficiency and reliability.

The BAVMODS® Aluminum Turbo Inlet Pipe Upgrade is a simple yet critical upgrade that corrects this bottleneck. It’s engineered for strength, optimized for airflow, and designed with OEM+ aesthetics that complement your engine bay perfectly.

This is a true functional enhancement — built to perform, built to last.

FITMENT: BMW 3 Series – G20 / G21 / G28 (2020–2025) including

• G20 Sedan – M340i (B58 Gen 2 / B58TU Engine)

• G21 Touring – M340i (B58 Gen 2 / B58TU Engine)

• G28 Long-Wheelbase Sedan – M340Li (B58 Gen 2 / B58TU Engine)

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