Mercedes SLK R172 Rear Axle Differential Diff 3,066 Ratio 1723505703 WARRANTY

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

Mercedes SLK R172 Rear Axle Differential Diff 3,066 Ratio is an original drivetrain component from the Differentials category, designed for the rear axle of this model. It ensures precise torque transfer and a stable gear ratio, which translates into predictable vehicle handling and a comfortable, confident driving experience. This is the ideal solution for users looking for a proven, factory-spec component instead of random aftermarket replacements.

Specifications and technical data

• SKU: A1723509003
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1723509003
• Substitutable numbers: A1723509003, A 172 350 90 03, A1723505703, A 172 350 57 03, A1723502102, A 172 350 21 02
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented rear axle is a drivetrain component responsible for distributing power to the rear wheels and maintaining the correct gear ratio. This allows the vehicle to maintain stability during acceleration, steady-speed driving, and cornering. A properly selected differential is crucial for the durability of other drivetrain components and for predictable handling characteristics.

Key technical features

The differential has been designed specifically for the rear of the vehicle, taking into account the suspension geometry and drivetrain requirements of the Mercedes SLK R172 generation. The axle construction ensures:

• stable torque transfer to the rear wheels,
• a properly selected gear ratio that affects acceleration characteristics and engine RPM,
• seamless operation with the factory suspension and traction control system.

A drivetrain assembly configured in this way allows for the preservation of factory driving sensations, without unwanted changes in dynamics or system refinement.

Practical application and installation

The rear axle from this offer is intended for installation in the rear of the vehicle, replacing the factory differential. In practice, this means it can be used for both post-accident repairs and standard replacement of a worn-out part. Its original Mercedes origin promotes proper fitment with half-shafts, mounts, and suspension components.

When selecting a differential, it is worth paying attention to compatibility with the vehicle's drivetrain version and gear ratio parameters to avoid discrepancies in drivetrain operation and control electronics. This component will perform well wherever the priority is maintaining factory driving characteristics and the correct operation of driver assistance systems.

Benefits of using an original differential

Using an original differential in a Mercedes SLK R172 brings a number of practical benefits:

• preservation of predictable handling and vehicle stability,
• consistent cooperation with the stock transmission and electronics,
• reduced risk of improper fitment of drivetrain elements,
• more even wear of tires and suspension components.

For drivers who value precise handling and driving comfort, it is important that the rear axle works harmoniously with the rest of the drivetrain, without additional vibrations or noises resulting from improperly selected components.

Gear ratio selection and technical knowledge

The correct selection of the differential gear ratio has a direct impact on acceleration characteristics, engine RPM at highway speeds, and overall driving comfort. For those who want to better understand the relationship between axle ratio and driving style, we recommend the article: Dismantled drive axles and differentials – how to choose ratios for your driving style. It is a practical source of knowledge that helps you consciously choose a component for your specific car configuration.

Expanding the drivetrain in a Mercedes

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 axles, differentials, or related components, check out the available parts in the Mercedes Differentials category.

For larger service or renovation projects, it is also worth learning about the approach to sourcing used components in one place – the following post may be helpful: Comprehensive supply: From the engine to the smallest clip – how to source used car parts in one place?, which discusses the advantages of consistent component selection and avoiding random replacements.