5 Mercedes W124 Parts That Owners Replace Most Often – Part 1
Added on: July 31, 2026
Author: OctoClub
1. Why these parts fail over time
Why these parts fail over time
The Mercedes-Benz W124 has earned a reputation as one of the most durable and best-engineered cars ever produced. Built between 1984 and 1997, it became famous for its exceptional build quality, reliable mechanical components and understated design. Many examples have now exceeded 300,000 or even 500,000 kilometers, proving just how well these cars were engineered.
However, even the legendary W124 is not immune to time. While the engines often continue running reliably after decades of use, many of the plastic and trim components inevitably deteriorate. Constant exposure to UV light, temperature fluctuations and everyday wear causes clips to weaken, surfaces to fade and mounting points to crack.
Fortunately, most of these aging parts are inexpensive to replace and can dramatically improve both the appearance and originality of the vehicle.
Here are five of the most commonly replaced Mercedes W124 parts every owner should inspect.
Front Seat Rail Covers
The front seat rail covers are one of the most commonly broken interior trim pieces on the Mercedes-Benz W124.
Located at the base of the front seats, these plastic covers are regularly struck by shoes when entering or exiting the vehicle. After decades of daily use, the retaining clips become brittle and eventually snap, leaving the covers loose, damaged or completely missing.
Although they are relatively small components, missing seat rail covers are immediately noticeable whenever the doors are opened and can make an otherwise well-maintained interior appear neglected.
Replacing them is a quick and inexpensive upgrade that restores the clean, factory-finished appearance of the cabin.
OctoClassic product:
Jacking Point Covers
The W124’s jacking point covers are among the first exterior trim pieces to disappear.
Located beneath the rocker panels, they are regularly removed during servicing and tyre changes. After decades of use, the retaining clips lose their flexibility, causing the covers to fall out or become damaged.
Missing jack point covers expose the lifting points to dirt, moisture and road salt while also making the car appear incomplete.
Installing new covers is a quick and inexpensive way to restore the clean factory look.
OctoClassic product:
https://octoclassic.com/product/mercedes-w124-side-skirt-jacking-cover-set-of-4-primed-a1246980330
Sun Visor Clips
Inside the cabin, one of the smallest but most commonly broken parts is the sun visor clip.
Every time the visor is used, the clip experiences mechanical stress. After thirty or forty years, the original plastic becomes brittle and often snaps without warning.
Once broken, the visor no longer stays securely in place, becoming both inconvenient and distracting while driving.
Modern reproductions use improved materials that provide significantly greater durability while maintaining the original Mercedes appearance.
OctoClassic product:
https://octoclassic.com/product/a124-sun-visor-trim-clip-holder-complete
Seat Switch Covers
The Mercedes-Benz W124 E500 is known for its luxurious electrically adjustable memory seats, but one of the most commonly worn interior details is the seat adjustment switch cover.
Used every time the driving position is adjusted, these plastic covers are exposed to constant handling, sunlight and years of wear. Over time they often crack, fade or lose their original finish, while the mounting tabs can become brittle and break.
Although the switch mechanism itself usually remains functional, damaged covers are immediately noticeable and detract from the premium appearance of the E500 interior.
Replacing the switch covers is a simple way to restore the original factory look without replacing the entire seat control assembly.
OctoClassic product:
https://octoclassic.com/product/w124-e500-seat-switch-cover-with-memory-left-or-right-mercedes
Dashboard Speaker Covers
Another interior component that commonly shows its age on the Mercedes-Benz W124 is the dashboard speaker cover.
Located directly on top of the dashboard, these plastic grilles are exposed to years of sunlight, heat and temperature changes. Over time, the original plastic becomes brittle, causing cracks around the edges, broken mounting points or damaged grille sections.
Because these covers are positioned in one of the most visible areas of the cabin, even small cracks can make the interior look older and less cared for. Many owners only notice the damage when cleaning the dashboard or preparing the car for a restoration.
Replacing worn speaker covers is a simple interior upgrade that restores the clean factory appearance of the W124 dashboard while maintaining the original Mercedes design.
OctoClassic product:
Q: Are these common W124 repairs suitable for DIY owners?
A: Yes. Most trim pieces, clips and switch covers can be replaced using basic hand tools without removing large sections of the interior. They are among the easiest restoration jobs for W124 enthusiasts.
Q: Is replacing small trim parts really worth it?
A: Absolutely. Small details make a significant difference to the overall presentation of a classic Mercedes. Fresh trim pieces restore the factory appearance, improve everyday usability and can even increase the vehicle’s value by demonstrating careful maintenance.
Q: Should original broken parts be repaired or replaced?
A: In most cases, replacement is the better long-term solution. Decades-old plastic often becomes too brittle to repair reliably. High-quality reproduction parts manufactured from modern materials typically provide greater durability while preserving the original look and fit.
Are you already a proud owner of a Mercedes W124? If so, check out our selection of parts for this car at the following link:
https://octoclassic.com/product-category/mercedes-benz/w124
Photo sources: autoevolution.com
