Pivot Bearing Mercedes C118 W177 Rear Seat Center Folding Backrest Bracket

Pivot Bearing Mercedes C118 W177 Rear Seat Center Folding Backrest Bracket is an original structural component designed for the rear interior section of Mercedes vehicles. It provides stable support for the rear seat, maintaining proper seat geometry and ensuring correct load transfer to the vehicle body. This used OEM part is a sensible choice for post-accident repairs, replacing a damaged frame, or restoring the factory rigidity of the rear bench seat.

Specifications and technical data

• SKU: A1779204004
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1779204004
• Substitutable numbers: A1779204004, A 177 920 40 04
• Location on the vehicle: Rear
• Category: Additional Seat Parts

Purpose and function of the rear seat frame bracket

The rear seat frame bracket in C118 / W177 series models is responsible for the correct seating of the seat structure in the rear part of the body. This component:

• stabilizes the rear seat relative to the floor and side mounting points,
• ensures proper guidance of the frame along the vehicle's axis,
• helps maintain the correct rigidity of connections in the rear bench area,
• reduces unwanted play and squeaks resulting from seat structure operation.

Thanks to the use of an original bracket, the factory seat geometry is preserved, which translates into predictable structural behavior during daily use and during sudden braking.

Benefits of using an original Mercedes component

Choosing an original rear seat frame bracket for a Mercedes primarily means a precise fit for the specific C118 / W177 platform. The component has been designed for:

• compatibility with factory mounting points in the rear body section,
• cooperation with the original seat frame and folding mechanisms,
• maintaining adequate connection rigidity under variable passenger loads.

The used OEM component allows for reduced repair costs while maintaining a structure consistent with the manufacturer's design. This is particularly important in vehicles where the consistency of the entire seating system with passive safety elements is crucial.

Vehicle placement and installation aspects

The bracket is intended for installation in the rear part of the vehicle, in the area where the rear seat is mounted. During replacement, it is recommended to:

• thoroughly clean the contact surfaces with the body and the seat frame,
• verify the condition of other mounting points in the rear seat zone,
• check the correct operation of the folding and backrest locking mechanisms after installation.

Professional installation allows for the restoration of proper seat structure support, eliminating play and unwanted noises while driving.

Using a used component for repair cost optimization

In the case of interior repairs, especially after mechanical damage or collisions, a used rear seat frame bracket is a practical cost-effective solution. It allows for the restoration of the factory structure without the need to resort to more expensive replacements with uncertain geometry. To better plan your repair budget and understand how using second-hand parts affects service costs, it is worth reading the analysis in the article Volkswagen 1.9 TDI vs 1.4 TSI – evolution of VW engines and repair costs, where a practical approach to optimizing service expenses is discussed.

If you want to select used interior structural elements even more effectively and avoid poor purchases, the guide how to professionally select used car parts will be helpful, explaining the importance of OEM part number compatibility and verifying component condition before installation.

Expanding repairs in the Mercedes seating area

If you are planning a comprehensive repair or upgrade of the seating zone in your Mercedes and need other elements from the same group, such as rails, additional mounts, or seat structure supports, check out the available parts in the category Other Mercedes seat parts.