Driveshaft BMW F30 F31 F20 LCI Petrol B48 Output Shaft Rear Left N/S D 27,6mm

BMW F30 F31 F20 LCI petrol B48 drive shaft, rear left is an original drivetrain component designed for the rear left side of BMW models with a petrol engine. Thanks to its factory design, it ensures correct torque transfer from the differential to the wheel and stable cooperation with the multi-link suspension. This solution is dedicated to users who expect precise fitment and correct drive geometry after repair or upgrade.

Specifications and technical data

• SKU: 8634241
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8634241
• Substitutable numbers: 8634241, 33208634241
• Location on the vehicle: Rear, Left
• Fuel type: Petrol
• Category: Drivetrain Hardware & Fasteners

Purpose and Fitment for BMW with Petrol Engine

The presented drive shaft has been designed for use in BMW F-series cars with LCI facelift, equipped with the B48 petrol engine. Its placement on the vehicle is the rear left side, which is crucial when selecting parts for the drive axle. The construction is optimized for the characteristics of a petrol engine, promoting smooth transfer of dynamic loads and reducing vibrations during acceleration.

Technical Construction and Role in the Drivetrain

The drive shaft acts as a link between the differential and the wheel hub, cooperating with the drive shafts and suspension components. The appropriately selected shaft diameter and joint geometry allow for maintaining proper torsional stiffness and fatigue strength under typical operating conditions of an F-series BMW car.

As a component from the Drivetrain Mounts and Brackets group, this drive shaft influences:

• stable torque transfer to the driven wheel,
• maintaining correct joint operation during suspension angle changes,
• reduction of play in the drivetrain, which translates to a more predictable throttle response.

Benefits of Using an Original BMW Part

Using an original drive shaft in a BMW with a B48 petrol engine allows for maintaining the factory operating parameters of the drivetrain. The appropriate fitment of length, diameter, and spline connections minimizes the risk of incorrect installation and accelerated wear of the joints. This is particularly important in cars where driving consistency and predictable rear axle behavior are paramount.

By choosing this component, you gain:

• compatibility with factory suspension and differential,
• maintenance of correct drive geometry under load,
• consistency with other rear axle components in BMW F-series vehicles.

Condition, Verification, and Workshop Application

This item comes from the used parts offering, allowing for an economical repair while maintaining the original manufacturer's specifications. This type of component is particularly useful for replacement after mechanical damage, drivetrain play, or after an accident involving the rear axle. A correctly selected drive shaft helps restore proper drive operation without the need to interfere with the suspension structure.

In workshops specializing in the BMW brand, this part is often used for:

• repairs after joint failure or mechanical damage to the shaft,
• comprehensive rear axle service in rear-wheel-drive vehicles,
• diagnosing vibrations and knocks originating from the differential or rear wheels.

Related BMW Drivetrain Components and Used Part Selection

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as additional drive shafts, mounting brackets, or differential supports, check the available parts in the BMW Drivetrain Mounts and Brackets category.

When selecting used suspension and drivetrain components, it is worth paying attention to the construction differences between suspension versions and model generations. A detailed discussion of these issues, along with practical examples and comparison tables, can be found in the article Stock vs. Sport Suspension – Construction Differences and Is It Worth Buying Used Suspension Parts?, which helps in consciously planning repairs for premium cars.