BMW 3 Series E87 120d E90 E92 320d Rear Axle Left N/S Output Drive Shaft

BMW 3 Series E87 120d E90 E92 320d Rear Axle Left N/S Output Drive Shaft is an original drivetrain component designed for installation on the rear axle on the driver's side. As part of the Cardan Joints group, it ensures stable torque transmission to the wheel, which translates into predictable handling and safe drivetrain operation in BMW 1 and 3 Series models.

Specifications and technical data

• SKU: 7547075-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7547075
• Substitutable numbers: 33217547075, 7547075, EM
• Location on the vehicle: Rear, Left
• Category: Propshafts

Application and function in the drivetrain

The presented rear axle output shaft has been designed specifically for rear-wheel-drive BMW 1 and 3 Series models, including the 120d and 320d versions. The component operates in the area connecting the final drive to the wheel hub, responsible for smooth torque transmission under varying loads and suspension movement.

The placement on the vehicle is the rear, left side, which is crucial when selecting parts – the geometry and length of the shaft are adapted to the specific mounting position. This ensures that the correct operating angles of the joints are maintained, as well as proper cooperation with the differential and suspension.

Construction and technical characteristics

The shaft belongs to the Cardan Joints group, meaning its design is adapted to operate at variable angles while transmitting the high torque typical of BMW diesel units. This solution limits vibrations, reduces noise, and supports the uniform operation of the drivetrain during acceleration, engine braking, and driving under load.

The original BMW origin helps maintain factory operating parameters – from the fitment to the splines and flanges, to the appropriate torsional rigidity. As a result, the component works correctly with the stock differential and hub, without the need for modifying other components.

Benefits of using an original shaft

• Compatibility with the factory drivetrain of the BMW 1 and 3 Series, without structural modifications.
• Stable power transmission to the rear left wheel, which supports predictable vehicle behavior on the road.
• Reduction of unwanted vibrations and play in the system, typical of worn drivetrain components.
• Maintenance of correct joint operating geometry thanks to the dedicated placement on the rear axle on the left side.

As a used part, the shaft represents a reasonable compromise between cost and functionality, allowing for the restoration of drivetrain efficiency without the need to invest in a new OEM component.

Selection and installation in the vehicle

To correctly select this shaft for a specific BMW unit, it is worth verifying compatibility with the OEM part number and interchangeable numbers in the vehicle's service documentation. This facilitates identification and minimizes the risk of selecting the wrong variant for a given engine and drivetrain version.

During installation, it is crucial to maintain the correct tightening sequence of connections, use appropriate tightening torques, and check the condition of cooperating components – the hub, differential, and seals. A correctly installed shaft ensures consistent operation of the entire drivetrain and reduces the risk of premature wear of other sub-assemblies.

Expanding the BMW drivetrain – related components

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other elements from the same group, such as additional shafts, joints, or connecting elements, check the available parts in the BMW Cardan Joints category.

If you are considering a wider scope of work on the car and want to learn more about the advantages of using dismantled components, the guide article on replacing body parts with used car parts may be helpful, which shows how to practically combine savings with maintaining the appropriate quality of components.