Turbocharger BMW F20 F30 LCI M140i M240i 340i 440i B58 Turbo Charger 7934605

The BMW F20 F30 LCI M140i M240i 340i 440i B58 Turbocharger Turbine 7934605 is an original turbocharger from the Turbochargers & Parts category, designed for BMW F Series petrol engines with the B58 engine. This used OEM component is a sensible choice for drivers who want to restore stock performance or prepare their car for further modifications in a controlled, technically correct manner.

Specifications and technical data

• SKU: 7934605
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7934605
• Substitutable numbers: 7934605, 11657934605
• Fuel type: Petrol
• Category: Turbos & Parts

Purpose and characteristics of the BMW B58 turbocharger

This turbocharger is designed to work with the B58 petrol engine used in the BMW M140i, M240i, 340i, and 440i models of the F20 and F30 LCI generations. The OEM design ensures proper fit with the exhaust, intake, cooling, and lubrication systems, resulting in stable engine performance.

As part of the Turbochargers and Parts family, this turbine is a key component responsible for achieving high efficiency of the petrol engine, proper boost and maintaining the factory torque and power characteristics throughout the entire rev range.

Application in BMW sports models

The B58 engine in M Performance versions requires a turbocharger with appropriate geometry and efficiency. The original turbine can be used in:

• BMW 1 Series F20 in the M140i version,
• BMW 2 Series in the M240i version,
• BMW 3 Series F30 LCI in 340i version,
• BMW 4 Series in the 440i version,

It allows you to maintain proper boost pressure, correct throttle response, and predictable drivetrain behavior. This is especially important during dynamic driving, where the stability of the turbocharger's operating parameters directly impacts safety and consistent performance.

Benefits of choosing a used OEM turbocharger

A used OEM turbocharger for the B58 engine offers a cost-effective solution while maintaining factory specifications. Compared to low-quality aftermarket parts, the original part provides:

• factory fit to the exhaust manifold, oil and cooling lines,
• compatibility with engine control software, without the need for additional modifications,
• stable operating parameters in typical load and temperature ranges for petrol units,
• possibility of further tuning based on the serial base, while maintaining the predictability of the engine response.

It's a good choice for both standard repairs and projects where maintaining the character of the factory supercharger system is important.

Condition, verification and assembly

This item is offered as a used BMW turbocharger, meaning it comes from a disassembly and is intended for reassembly after standard workshop inspection. Before installation, we recommend:

• checking rotor clearances and oil system tightness,
• verification of the condition of oil and cooling lines,
• checking the intake system for contamination and leaks,
• correct bleeding of the lubrication system after assembly.

Professional installation at a specialized service center minimizes the risk of damage resulting from installation errors and allows you to fully utilize the potential of the turbocharger in your petrol engine.

BMW turbochargers – offer and technical knowledge

If you're looking for other BMW turbochargers for petrol or diesel models, check out our dedicated category: BMW turbochargers in our offer . You'll find a wide selection of OEM turbochargers and associated components there, making it easy to choose the right part for your specific engine version.

When planning repairs or modifications, it's also worth familiarizing yourself with practical tips for using aftermarket components. Our Audi guide, "Second-Hand Parts – Tuning and Repairs Without Losing Quality," shows you how to wisely use used components—from turbochargers to suspension components—to achieve a solid result without excessive costs. Although this article focuses on a different brand, the principles for selecting and verifying second-hand parts described there are also helpful when working with BMW turbochargers.