Mercedes R171 SLK 350 Rear Axle Differential Diff 1713501700 3,27 Ratio WARRANTY

Listing details

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

Mercedes R171 SLK 350 Rear Axle Differential Diff 3,27 Ratio is a rear differential from the Differentials category, designed for installation in the drive axle of the Mercedes SLK R171 generation roadster. A properly selected final drive ratio allows for maintaining the correct acceleration characteristics and top speed, while the robust construction of the rear axle ensures stable torque transfer to the wheels. This is a solution for users who expect precise drivetrain operation and consistency with the vehicle's factory configuration.

Specifications and technical data

• SKU: A1713502114
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1713502114
• Substitutable numbers: A1713502114, A 171 350 21 14, 1713501700, 171 350 17 00, A1713500914, A 171 350 09 14
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear axle is a component responsible for torque distribution to the rear wheels and for changing the gear ratio between the driveshaft and the half-shafts. In the Mercedes SLK R171 350 model, it operates in the rear axle, integrating the final drive with the axle housing and suspension mounts. The appropriate differential ratio affects:

• acceleration characteristics across the entire rev range,
• engine RPM at highway speeds,
• drivetrain refinement during dynamic driving.

By maintaining the correct ratio, the axle works in harmony with the stock transmission and vehicle electronics, which reduces the risk of unwanted changes in the car's behavior.

Rear axle construction and key technical features

The rear axle in this Mercedes model combines the final drive and the differential mechanism in one compact housing. This design ensures:

• a rigid, deformation-resistant structure,
• stable half-shaft guidance under dynamic loads,
• efficient heat dissipation from the gearbox.

Its placement in the rear of the vehicle promotes proper weight distribution, which in a sports-oriented roadster translates into predictable handling in corners. Precise cooperation with the rear axle suspension is important both during daily use and during more dynamic driving.

Benefits of using an original differential

Using a differential from the same model family allows for maintaining the factory drivetrain performance parameters. The most important advantages include:

• compatibility with factory mounting points on the chassis,
• fitment for stock half-shafts and driveshaft,
• consistency with factory gear ratio characteristics.

For the user, this means reducing the need for installation modifications and easier integration with the existing vehicle configuration. A properly selected rear axle also helps minimize the risk of improper operation of assistance systems, such as traction control or electronic stability control.

Gear ratio selection and technical support

When replacing a differential in a Mercedes SLK R171 350, it is crucial to match the ratio to the transmission used and the expected driving style. This directly affects the perceived dynamics, acoustic comfort, and fuel consumption. If you want to better understand how the drive axle ratio translates into car behavior and how to choose a differential for your needs, it is worth checking out this specialist guide: Dismantled drive axles and differentials – how to choose ratios for your driving style.

Characteristics of a used product and practical application

The offered item is a dismantled part intended for reinstallation in the vehicle's rear axle. This type of component is particularly useful in situations where:

• mechanical damage to the existing axle has occurred,
• distinct noises from the final drive have appeared,
• it is necessary to replace the complete differential instead of repairing individual sub-assemblies.

Choosing a used differential allows for cost savings compared to purchasing a new component, while maintaining structural compatibility with the given model. For those planning broader modifications or drivetrain tuning, practical tips on purchasing parts from the secondary market may also be useful: Buying used car parts – the most common mistakes when choosing parts for tuning.

Expanding the drivetrain in a Mercedes – Differentials

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, alternative differentials, or compatible final drives, check out the available parts in the Mercedes Differentials category.