Mercedes W177 Rear Spring Retainer Insert Lower Left Right N/O/S Set A1773250000

The Lower Rear Spring Mount Insert for Mercedes W177 is an original suspension component designed for both the left and right sides of the rear axle. This set ensures stable, factory-standard spring support, which translates to predictable vehicle handling and uniform suspension operation. It's a practical solution for replacing worn-out parts or for repairs after mechanical damage.

Specifications and technical data

• SKU: A1773250000
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1773250000
• Substitutable numbers: A1773250000, A 177 325 00 00
• Location on the vehicle: Rear, Right, Left
• Category: Other Steering & Suspension Parts

Purpose and Function in Suspension

The presented set of lower rear spring mount inserts has been specifically designed for Mercedes W177 models, intended for the rear axle on both the left and right sides. This component is responsible for the correct seating of the spring in its cradle, damping vibrations transferred to the body, and maintaining proper suspension geometry.

Using a dedicated, original spring mount minimizes the risk of unwanted play, creaking, and uneven tire wear. Installing a complete set on both sides of the rear axle ensures consistent suspension performance on the right and left sides.

Construction and Fitment for Mercedes W177

The lower spring mount insert is structurally designed to fit the cradle at the rear of the body and the shape of the spring used in the Mercedes W177. This ensures predictable installation, and the component does not require any additional modifications after fitting.

Original origin ensures:

• compatibility with factory mounting points on the rear axle,
• correct spring positioning in both vertical and horizontal planes,
• stable support on both the left and right sides.

Condition and Service Application

This part comes from the group of used Mercedes parts, making it an attractive alternative to new components while maintaining original specifications. This solution is particularly useful for post-accident repairs, replacing worn spring mounts, or restoring the original suspension characteristics after previous modifications.

Replacing the lower rear spring mount insert is recommended when symptoms such as clunks from the rear of the vehicle, uneven vehicle stance, or visible damage to the spring cradle appear. Using a complete set for both sides helps avoid differences in suspension operation between the left and right sides.

Benefits of Installing an Original Set

Installing the original rear spring mount insert in the Mercedes W177 offers a range of practical benefits:

• Factory Fitment – no modifications required, compatibility with the manufacturer's intended suspension geometry.
• Stable Suspension Operation – proper spring support minimizes unwanted movements and noises.
• Consistency Across the Axle – the set includes both left and right sides, facilitating servicing and ensuring uniform vehicle behavior.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Mercedes and need other parts from the same group, such as mounts, washers, or additional brackets, check the available parts in the Other Mercedes category.

Additional Information and Service Tips

When selecting used suspension components, it's worth paying attention to their origin and compatibility with the specific body version and drivetrain. Original parts from dismantling often allow for significant cost reduction in repairs while maintaining proper operational parameters.

To better understand the differences in the construction and loads of suspension components and drivetrains in higher-performance vehicles, a comparison of solutions used in sports versions of cars might be helpful. You can find more on this topic in the article Audi RS vs. Other Models – What's Under the Hood and Chassis?.

If you want to consciously optimize service costs while using original components from dismantling, it's worth reading the guide on the cost-effectiveness of such solutions: Rising Repair Costs and the Boom in Used Parts – How to Save on Car Servicing?.