Mercedes R172 Rear Axle Driveshaft Left Right N/O/S M271 Petrol A1723501204

Mercedes R172 Rear Axle Driveshaft Left Right M271 Petrol is an original drivetrain component designed for installation on the rear axle of Mercedes vehicles equipped with the M271 petrol engine. The driveshaft belongs to the Driveshafts category, ensuring efficient torque transmission to the wheels while maintaining stable suspension and drivetrain operation.

Specifications and technical data

• SKU: A1723501204
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1723501204
• Substitutable numbers: A1723501204, A 172 350 12 04, A1723500010, A 172 350 00 10
• Location on the vehicle: Rear, Right, Left
• Fuel type: Petrol
• Part type: Driveshaft
• Category: Driveshafts

Purpose and vehicle placement

The presented rear driveshaft is designed for operation on the rear axle, with the possibility of installation on both the left and right sides. This solution facilitates part selection during drivetrain repairs, especially when it is necessary to replace a component on a specific side of the vehicle. The driveshaft construction is adapted to work with the petrol drivetrain based on the M271 unit, which allows for maintaining the correct operating parameters of the drive axle and differential.

Technical and functional characteristics

The rear driveshaft, which is part of the Driveshafts group, is responsible for transferring torque from the differential to the wheel while simultaneously compensating for suspension movements. The properly selected length, diameter, and joint geometry allow for:

• stable load transfer during acceleration and engine braking,
• smooth operation during changes in the wheel angle relative to the drive axle,
• reduction of vibrations and noise in the drivetrain,
• maintaining the correct rear suspension geometry.

Thanks to its compatibility with the M271 petrol unit, the driveshaft works in harmony with the torque characteristics of this engine series, which promotes durability and predictable vehicle behavior in daily operation.

Benefits of using an original Mercedes driveshaft

Using an original component dedicated to a specific Mercedes platform allows for maintaining the factory operating parameters of the drivetrain. Key advantages include:

• Precise fit to the suspension and differential geometry, without the need for modifications.
• Consistency with factory standards for the strength and rigidity of driveshafts.
• The ability to use existing mounting points and hardware, which facilitates installation.
• Reduction of the risk of improper fitment, typical for aftermarket parts with a universal design.

A component configured in this way is particularly beneficial for repairs where the goal is to maintain the original handling characteristics and drivetrain performance, without interfering with other rear suspension components.

Condition and use in service practice

The offered driveshaft comes from the segment of original used parts, which in service practice often represents a reasonable compromise between repair costs and maintaining factory specifications. Such elements are commonly used for:

• repairs after mechanical damage to the driveshaft or joints,
• eliminating vibrations and knocking sounds originating from the rear drivetrain,
• comprehensive work on the drive axle and differential,
• restoring vehicle performance after collisions or intensive use.

The selection of the correct driveshaft should always take into account compatibility with the engine unit, fuel type, and rear suspension configuration, which in the case of this part is clearly defined by its intended use for the M271 petrol engine and rear axle installation.

Drivetrain expansion and auxiliary materials

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other elements from the same group, such as additional driveshafts, connecting shafts, or components working with the differential, check the available parts in the Mercedes Driveshafts category.

For a better understanding of the relationship between the driveshaft, drive axle, and differential, as well as the impact of gear ratios on driving characteristics, it is worth reading the guide Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which discusses in detail the selection of drivetrain components to suit individual driver needs.

If you are considering a broader upgrade of the rear-wheel drive or want to consciously assess the condition of used components working with the driveshaft, the article Second-hand differential – what you should know about used differentials, sensors, and drivetrain systems will also be helpful, containing practical tips on diagnostics and safe part selection.