Mercedes C205 Tail Gate Trunk Lid Left Right N/O/S Extension Spring A2057570229

The Mercedes C205 Trunk Lid Left Right Extension Spring is an original part of the lid lifting mechanism, designed for operation on both the left and right sides of the body. Thanks to its precise force characteristics and adaptation to the trunk lid's construction, it ensures stable guidance, controlled movement, and predictable closing. This is a solution for users who expect reliable lid operation without unwanted play or jerking.

Specifications and technical data

• SKU: A2057570229
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2057570229
• Substitutable numbers: A2057570229, A 205 757 02 29
• Location on the vehicle: Right, Left
• Category: Lift Supports, Latches, Hinges & Additional Parts

Purpose and Function in the Trunk Lid System

The extension spring acts as a supporting element for opening and closing the trunk lid on the C205 series coupé model. It is responsible for:

• controlling the force required to lift the lid,
• stabilizing movement in the final phase of opening and closing,
• evenly distributing the load on the hinges and mountings on both the left and right sides.

Its placement on both sides of the vehicle allows for symmetrical operation of the entire mechanism, which translates to reduced wear on hinges and the lock, and more predictable lid behavior in daily use.

Construction and Fit for the C205 Body

This element belongs to the group of Gas Springs, Locks, Hinges, and Other Parts, meaning it is designed to work with the factory trunk lid mounting system in the C-Class coupé body. The construction of the extension spring is optimized for:

• correct operating range at full lid opening and closing,
• compatibility with original hinges and lock,
• maintaining proper lid guidance geometry without stressing sheet metal and coverings.

This ensures an organized installation process, and after installation, the lid operates according to the manufacturer's original specifications.

Benefits of Using an Original Mercedes Part

Choosing an extension spring from the Mercedes parts range primarily means guaranteed fit for the specific model and body version. In practice, this means:

• no need for modifications to mountings or interference with the lid's construction,
• preservation of factory assembly tolerances and geometry,
• consistent operation with other elements of the trunk lifting system.

A properly selected extension spring helps reduce the loads acting on the hinges and lock, which can extend their lifespan and improve the comfort of daily trunk use.

Vehicle Placement and Installation Aspects

The element is intended for installation on the right and left sides of the trunk lid, which helps maintain the balance of forces acting on the body structure. When replacing it, pay attention to:

• correct seating in the mounting points on both sides,
• checking the lid's operation through its full range of motion after installation,
• assessing the condition of the cooperating hinges and lock to avoid uneven loading.

This approach helps restore consistent, smooth operation of the entire trunk lid system and minimizes the risk of requiring further service intervention in a short period.

If you are modernizing or servicing the trunk lifting mechanism in your Mercedes and also need other parts from the Gas Springs, Locks, Hinges, and Other Parts group dedicated to this brand, check the available parts in the Mercedes Gas Springs, Locks, Hinges, and Other Parts category.

Selecting a Used OEM Part and Additional Materials

When choosing a used OEM part for a trunk lid, it's worth paying attention to compatibility with the specific body version and vehicle configuration. Materials describing the principles of selecting original components based on manufacturer markings and vehicle data can be helpful – this topic is discussed more broadly in the article Audi's Five-Cylinder Engine – A Legend from Quattro to RS3 and How to Care for It with Original Audi Parts, which presents a practical approach to searching for and verifying used OEM parts.

If you are considering whether a new or used part is a better choice for elements like springs, locks, or hinges, comparing costs and durability described in the material New or Used? A Comparison of Car Part Costs and Quality, which discusses the differences between new aftermarket parts and original disassembled components, may be helpful.