Drive Shaft BMW F20 F30 F31 N13 Output Shaft Rear Axle Left N/S D=25MM 7628251

The BMW F20 F30 F31 N13 Rear Left Driveshaft Rear Left D=25MM 7628251 is an original drivetrain component from the Driveshafts category, designed for installation on the rear left side of BMW F-series vehicles. This used OEM driveshaft ensures proper torque transfer, maintaining factory operating parameters and compatibility with the suspension and drivetrain systems. It's a solution for users seeking proven construction quality while keeping service costs reasonable.

Specifications and technical data

• SKU: 7628251
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7628251
• Substitutable numbers: 7628251, 33207628251, 7597673, 33207597673, KD
• Location on the vehicle: Rear, Left
• Category: Driveshafts

Vehicle Application and Placement

The driveshaft presented belongs to the group of components referred to as Driveshafts and is designed for operation on the rear axle, on the left side of the vehicle. Its placement as a Rear, Left component means it works in conjunction with the rear differential and the wheel hub on the driver's side (in left-hand drive vehicles), ensuring stable and predictable power delivery.

Selecting the correct driveshaft for a specific version of the BMW F20, F30, or F31 with an N13 engine is crucial for maintaining correct suspension geometry, proper fitment with the hub and differential, and for avoiding undesirable vibrations or noises during driving.

Construction and Functional Parameters

The rear left driveshaft with a working diameter of D=25MM has been engineered for stable transfer of loads typical for rear-wheel drive in BMW F-series models. The shaft diameter is chosen to ensure adequate torsional stiffness while not increasing unsprung mass beyond the manufacturer's specifications.

This component works with the rear axle constant velocity joints, responsible for:

• transferring torque from the differential to the left-side wheel,
• compensating for vertical and horizontal suspension movements,
• maintaining smooth drivetrain operation under varying loads.

By preserving factory geometry and dimensions, the driveshaft integrates seamlessly with traction control and stability control systems, contributing to predictable vehicle behavior in various road conditions.

Benefits of Using an Original BMW Driveshaft

Choosing a used OEM component from the Driveshafts category for BMW helps maintain the structural integrity of the entire drivetrain. The original rear left driveshaft was specifically designed for the loads generated by the N13 engine and the suspension characteristics of the F20, F30, and F31 models.

The main advantages of using this driveshaft include:

• Factory Fitment – maintaining the correct length, diameter, and mounting points, which simplifies installation and reduces the risk of compatibility issues.
• Drivetrain Cohesion – proper cooperation with the differential and wheel hub, without requiring modifications to other components.
• Stable Power Transfer – reduction of vibrations and unwanted play, which contributes to driving comfort and the longevity of other components.

A used OEM part is often a sensible compromise between cost and quality, especially for heavily loaded components like a rear driveshaft.

Condition, Origin, and Service Application

The driveshaft comes from the BMW brand and is classified as a used item, meaning it has been previously operated in a vehicle but is suitable for further use after proper installation. Such components are often chosen by workshops specializing in BMW service when the priority is to maintain the original construction while optimizing repair costs.

Due to the nature of the driveshaft's function, installation is recommended in a specialized service center, adhering to manufacturer procedures, correct torque specifications, and checking the condition of the constant velocity joints and seals of cooperating elements.

If you need other components from the drivetrain category for this brand, for example, for upgrading or a comprehensive rear axle repair, check the available parts in the BMW Driveshafts category.

In case of issues with the differential or drive axle in your BMW, it's worth familiarizing yourself with practical tips on selecting original used components – this is thoroughly discussed in the article Noisy Differential? Find out why a used OEM drive axle is a better investment than an uncertain aftermarket part.

If you are considering whether a new replacement or a used OEM part would be a better choice in your situation, a comparison of costs and durability described in the material New or Used? A Comparison of Car Part Costs and Quality may be helpful.