Building a better B58-powered BMW involves more than adding power. The components carrying pressurized air through the system also deserve attention, especially when you are planning a tune or adding supporting modifications.

The MAD BMW B58 Charge Pipe replaces the factory plastic charge pipe with an upgrade designed around durability, airflow and precise fitment. Larger-diameter piping, smooth tubing and a CNC machined throttle body connection make it a practical addition to your BMW’s boost system.

With a clean black finish, included installation hardware and a built-in water methanol injection bung, our charge pipe combines everyday functionality with room for future modifications.

Replace the Factory Plastic Charge Pipe

Your charge pipe carries pressurized air toward the throttle body, making it an important connection in the engine’s intake system. Maintaining a secure, properly sealed path helps the system operate as intended.

Our MAD B58 Charge Pipe replaces the original plastic component, addressing a potential weak point in the factory setup. For owners preparing a modified B58 build, it is an opportunity to strengthen a supporting component alongside other performance upgrades.

It also makes sense for enthusiasts who want to replace their factory pipe proactively. Whether your BMW is lightly modified or part of a more ambitious project, a dependable charge pipe belongs on the list of supporting hardware to consider.

Larger Piping and Smooth Airflow

The MAD B58 Charge Pipe features larger-diameter piping with smooth, consistent tubing, designed to improve airflow through the charge path.

The goal is straightforward: provide an efficient route for pressurized air while replacing the factory pipe with a more durable assembly. The design supports increased flow and is intended to enhance throttle response and reduce throttle lag.

How much difference you feel will depend on your vehicle’s existing setup and calibration. Our charge pipe gives you the supporting hardware to build around, whether you are refining your current configuration or preparing for additional modifications.

CNC Machined Throttle Body Connection

A charge pipe upgrade needs to fit securely at its connection points. That is why our design includes a CNC machined throttle body connection.

This precisely machined connection is designed to provide accurate fitment and a proper seal at the throttle body. It is a key detail for a component that must maintain a sealed path under boost.

Combined with the supplied couplers and clamps, the connection helps create a complete assembly designed for its listed B58 applications.

Quality Couplers, Clamps and Installation Hardware

Our MAD B58 Charge Pipe kit includes the components needed for installation:

• High-quality 3-ply silicone couplers
• Stainless steel clamps
• Required installation hardware

Including these components makes it easier to plan the upgrade without separately sourcing the basic connecting hardware.

The silicone couplers join the assembly’s sections, while the stainless steel clamps secure those connections. Together with the machined throttle body connection, they support the fit and sealing of the complete system.

Designed as a direct OEM replacement, the charge pipe takes the place of the original component on compatible vehicles.

Built-In Water Methanol Injection Bung

For enthusiasts planning additional modifications, the MAD B58 Charge Pipe includes a built-in water methanol injection bung.

This provision gives you a connection point for a compatible water methanol injection setup without needing to add a bung to the pipe later. It is a useful feature for owners who want to account for future changes when selecting their supporting hardware.

A water methanol injection system is a separate upgrade and requires its own compatible components and appropriate setup. The integrated bung simply provides a convenient provision within the charge pipe.

A Clean Black Finish for an OEM-Style Appearance

Performance hardware can look at home in the engine bay.

Our charge pipe features a black finish that gives it a subtle, OEM-style appearance. It suits owners who prefer a clean engine bay while still upgrading the components beneath the hood.

Whether you are keeping the rest of the engine bay close to factory or pairing the pipe with other aftermarket hardware, the understated finish works well with a wide range of builds.

Key Features of the MAD B58 Charge Pipe

• Replaces the factory plastic charge pipe.
• Larger-diameter piping designed for increased flow.
• Smooth, consistent tubing for an efficient charge-air path.
• Designed to enhance throttle response and reduce throttle lag.
• CNC machined throttle body connection for precise fitment and a proper seal.
• 3-ply silicone couplers included.
• Stainless steel clamps included.
• Required installation hardware supplied.
• Built-in water methanol injection bung.
• Black finish for a clean, OEM-style look.
• Direct replacement design for the listed applications.

Charge Pipe Dimensions

The MAD B58 Charge Pipe uses the following connection and piping dimensions.

Throttle Body Side

• Flange inside diameter: 2.70 inches / 68.6mm
• Pipe outside diameter: 3.00 inches / 76.2mm

Turbo Side

• Inlet flange inside diameter: 2.56 inches / 65.0mm
• Pipe outside diameter: 2.25 inches / 57.2mm

These measurements provide a reference for the pipe’s design and connection sizes. Vehicle compatibility should be confirmed using the application details below.

BMW B58 Fitment

Although the product name highlights F Chassis models such as the M140i, M240i, 340i and 440i, our application list also includes selected early G Chassis B58 vehicles.

Listed applications include:

• BMW 1 Series: 2015–2019 F20/F21 LCI — B58 M140i.
• BMW 2 Series: 2015–2021 F22/F23, including LCI — B58 M240i.
• BMW 3 Series: 2014–2020 F30/F31/F34 LCI — B58 340i.
• BMW 4 Series: 2015–2021 F32/F33/F36, including LCI — B58 440i.
• BMW 5 Series: 2015–2019 G30/G31/G38 — B58 540i, including xDrive.
• BMW 6 Series: 2016–2019 G32 GT — B58 640i GT.
• BMW 7 Series: 2014–2019 G11/G12 — B58 740i.
• BMW X3: 2016–2019 G01 — B58 M40i.
• BMW X4: 2017–2019 G02 — B58 M40i.

Fitment applies to the specified B58-powered variants within these listed chassis ranges. Confirm your exact model, engine and production details before ordering; a matching model year alone does not establish compatibility.

A Practical Supporting Upgrade for Your B58

A well-planned build gives supporting components the same attention as headline performance upgrades.

Our MAD B58 Charge Pipe brings together a factory plastic pipe replacement, an improved airflow path, precise connections and included installation hardware. The water methanol injection provision adds flexibility for future plans, while the black finish keeps the installation visually understated.

Whether you are preparing your M240i for its next round of modifications, refining a 340i build or upgrading another compatible B58-powered BMW, this charge pipe provides a practical foundation.

Upgrade Your BMW with MAD

Give your boost system the attention it deserves with the MAD BMW B58 Charge Pipe.

With larger piping, a CNC machined throttle body connection, quality silicone couplers and a built-in water methanol injection bung, it delivers the features enthusiasts want in a straightforward replacement upgrade.

Shop the MAD BMW B58 Charge Pipe for M140i, M240i, 340i, 440i and Other Listed Applications