BMW F20 F21 F30 F31 LCI M140i 340i B58 V-band Screw Blamp 8612537

The BMW 1 3 Series F20 F21 F30 F31 LCI M140i 340i B58 V-band Screw Blamp is an original exhaust system component from the Hoses, Pipes and Tubes group, designed for modern BMW 1 and 3 Series models with the B58 engine. This used OEM part ensures a factory fit, a stable V-band connection, and predictable exhaust system behavior under demanding operating conditions.

Specifications and technical data

• SKU: 8612537
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8612537
• Substitutable numbers: 18328612537, 8612537
• Category: Hoses, Lines & Pipes

Application in BMW Models with B58 Engine

The presented V-band component has been designed for the BMW 1 Series F20/F21 and 3 Series F30/F31 LCI (facelift) models, specifically the M140i and 340i versions with the B58 engine. This means that the geometry, diameters, and connection routing are adapted to the factory exhaust system of these models, facilitating installation and minimizing the need for additional modifications.

Thanks to its V-band connector design, this component allows for secure, axial routing of exhaust system sections, which is particularly important under the higher thermal and dynamic loads typical of the B58 engine.

V-band Component Construction and Function

The V-band Screw Blamp acts as a precise connector in the exhaust system, responsible for securely joining cooperating pipe sections. The characteristic V-band geometry ensures uniform clamping pressure around the entire circumference, which helps maintain connection seal and reduces the risk of exhaust leaks.

This type of solution is frequently used in modern turbocharged engines because it:

• facilitates the disassembly and reassembly of exhaust system components,
• ensures repeatable positioning of cooperating parts,
• helps reduce stresses resulting from the thermal operation of the system.

Benefits of Using an Original BMW Component

Using an original BMW component in the exhaust system helps maintain the vehicle's structural integrity. Factory fit translates to correct pipe routing, proper sealing, and reduced unwanted vibrations and noise. This is particularly important in higher-powered cars like the M140i and 340i, where the exhaust system operates under greater load.

A used OEM part also represents a sensible compromise between cost and quality – you maintain the original technical specification while avoiding problems typical of imprecisely manufactured aftermarket alternatives.

Condition, Fitment, and Installation

The offered component is used, meaning it comes from a dismantled vehicle and may show signs of wear, while still retaining the functionality required for further use. This type of part is intended for installation in place of the factory component, without the need for modifications to the exhaust system structure.

When replacing, it is recommended to:

• inspect the cooperating sealing surfaces,
• check the condition of adjacent pipe and hose sections,
• apply appropriate tightening torques in accordance with BMW service documentation.

System Expansion – Other Elements from the Hoses, Pipes and Tubes Group

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and require other elements from the same group, such as flexible exhaust sections, exhaust gas pipes, or connecting pipes, check the available parts in the BMW Hoses, Pipes and Tubes category.

For drivers considering broader use of aftermarket parts, including components for other makes, an article describing the practical aspects of selecting and installing used components may be helpful – you can find it here: Volkswagen – Solidness and Reliability. Why Used VW Parts Are a Sensible Choice?.