Genuine Mercedes A Class W177 Front Bumper Left Bracket 2018 ON A1778859502

Part number A1778859502. We take parts off vehicles every week, and this page is updated with a link straight to the part as soon as another one arrives.

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About part number A1778859502

A front bumper left-hand side bracket is a structural mounting component that belongs to the bodywork and trim system. It secures the front bumper cover to the inner body structure on the left-hand side of the vehicle, ensuring the panel aligns correctly with the adjacent bodywork. When it is working correctly, the front bumper sits flush with no uneven gaps, vibrations, or loose edges while driving.

To ensure this is the correct part, you must match part number A1778859502 directly with the number stamped on your original bracket. On plastic or metal bumper mountings of this type, the part number is usually moulded or stamped directly into the surface of the component. Matching this exact number is the only way to confirm correct fitment.

This part is commonly replaced after a minor front-end impact, a parking scrape, or if the plastic clips and mounting points have snapped during bumper removal. When replacing this bracket, you often need replacement plastic trim rivets, fixings, or screws, as the original fasteners are frequently damaged or stretched during removal.

About this kind of part: brackets and mountings

A bracket is the moulded or pressed part that holds a panel, a lamp or a bumper to the body of the car. It is hidden once everything is assembled, and it is designed to break: the bracket is cheap and the panel it carries is not, so in a light knock the bracket gives way first and takes the energy. That is why a car with no visible damage often still needs them, and why they are replaced far more often than the parts they hold.

Why people replace one

  • A low-speed knock has snapped the bracket while leaving the panel it holds undamaged.
  • A panel sits proud, droops at one end, or has a gap that will not close, because the bracket behind it has cracked.
  • A rattle or a creak over bumps, where a broken bracket is letting a panel move against the body.
  • The bracket was broken during a previous repair, taking a bumper or a lamp off, and never replaced.
  • A lamp or a panel has been held on with tape, glue or a repair plate and the proper part is wanted.

Fitting it

  • Most brackets are reached only with the panel they carry removed, so the job is usually done at the same time as the panel comes off anyway.
  • They are held by screws, plastic nuts or clips into the body, and the fasteners are often broken on removal and worth having to hand.
  • A bracket sets the position of the panel in front of it, so the panel gaps are worth checking before everything is tightened down.
  • Where a bracket has snapped, look at the body mount behind it as well. The same knock often distorts the metal the bracket screws to.

Making sure it is the right one

  • Match the part number. Brackets are handed, and the two sides of a car take different numbers even where they look like mirror images.
  • A bracket is specific to the panel it carries and to the trim level, so one from a different version of the same model may locate in the body and still hold the panel in the wrong place.
  • Count the fixing points and compare their spacing with the broken part in front of you. This is the quickest check there is.
  • A repair plate is not the same part. If the original has snapped, the proper bracket restores the panel position; a plate holds it wherever it happens to sit.

What to look for in the photographs

A Part number — Moulded or stamped into the body of the bracket. This is the number to match, because handed parts look alike.
B Fixing points — The holes, slots and studs that screw to the body. Count them and compare the spacing with your own part.
C Locating pegs — The pins or tabs that set the panel's position. A sheared peg means the panel will sit wrong even though the bracket bolts up.
D Stress points — The narrow sections and the moulded ribs, where a bracket fails. Look at these rather than at the broad faces.
E Handing — Which way the arms and tabs face. Hold the photograph against your own part rather than judging by the overall shape.

This section describes brackets and mountings parts in general. The numbers and the photographs above are this part.

Free next-day delivery in the United Kingdom Sent with DPD on a tracked, next-day service. Most mainland addresses are next day; the Highlands and Islands, Northern Ireland, the Channel Islands and the Isle of Man can take a day longer.

Returns Thirty days to change your mind, and we pay the return postage in the United Kingdom and Germany.

Trade and VAT C.E.J Haime Group Limited is VAT registered in England and Wales, and every order comes with a full VAT invoice.

Not sure it is the right part? Send us your registration or VIN and we will check this part number against your own vehicle before you buy.

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