Engine Mount BMW F20 F30 F31 LCI B48 Support Left N/S Mounting Petrol 6859413

The BMW F20 F30 F31 LCI B48 Engine Mount Left is an original part from the Engine Mounts category, designed for B48 gasoline engines in the F20, F30, and F31 facelifted body versions. This used engine mount ensures a factory fit, provides stable support for the powertrain, and limits vibration transfer to the chassis.

Specifications and technical data

• SKU: 6859413
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6859413
• Substitutable numbers: 6859413, 22116859413
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Engine Mounts

Purpose and Function of the Engine Mount

The left engine mount in BMW F-series models with the B48 engine is responsible for the precise positioning of the engine relative to the subframe and body. This component works as part of a system of several mounts, absorbing loads resulting from:

• Torque generated by the gasoline engine,
• Dynamic load changes during acceleration and braking,
• Vibrations produced during the operation of the powertrain.

A functional engine mount reduces noise, vibrations, and unwanted powertrain movements, which translates to stable vehicle handling and comfortable powertrain operation.

Compatibility with B48 Engine and LCI Body

The presented left engine mount is designed to work with the B48 gasoline engine in the F20, F30, and F31 facelifted (LCI) body versions. This ensures:

• Correct mounting geometry relative to the body's mounting points,
• Appropriate vibration damping characteristics for the gasoline engine,
• Compatibility with factory brackets and mounting bolts.

This allows for predictable installation without the need for structural modifications, and the powertrain maintains operating parameters as intended by the manufacturer.

Benefits of Using an Original Engine Mount

Using an original BMW engine mount helps maintain the integrity of the entire engine mounting system. In practice, this means:

• Maintaining the factory level of vibrations and noise in the cabin,
• Reduced loads transferred to other mounting components,
• Minimizing the risk of damage to hoses, accessories, and components adjacent to the engine.

A used OEM part is a good choice for users who want to combine technical installation correctness with cost control, especially for vehicles used intensively.

Professional Installation and Mounting System Diagnostics

When replacing the left engine mount in a BMW F20, F30, or F31 with a B48 engine, it is recommended to:

• Inspect the remaining engine mounts and the transmission mount,
• Check the condition of the subframe and mounting points,
• Verify any play in the powertrain after installation.

A correctly selected and installed engine mount minimizes the risk of secondary failures, such as cracked hoses, excessive wear of joints, or improper load transfer to suspension components.

If you are planning a comprehensive service of the engine mounting system in your BMW and need other parts from the engine mounts category dedicated to this brand, check the available parts in the BMW Engine Mounts category.

Technical Support and Knowledge of BMW Engines

When selecting engine mounting components, it is worth considering the specifics of individual BMW powertrains and their operating characteristics. If you are interested in comparing popular diesel engines from this brand in terms of performance, durability, and operating costs, check out the article BMW N47 vs M57 / M57N / M57N2 – Ranking of Legendary Diesels, which helps to better understand the design differences between individual units.

If you want to expand your knowledge on selecting original parts from the aftermarket and consciously choose used components for your car, our guide Best Used Car Parts – A Guide to the Most Frequently Chosen Original Parts may be helpful, where we discuss practical selection criteria and technical condition verification.