Genuine AUDI A5 F5 Front Right Bumper Air Guide 8W6121764C NOT A FAKE COPY

Part number 8W6121764C. 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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What this part sells for

We last sold a part with this number on 2026-03-26 for GBP 25.00, delivered.

These figures are updated automatically and are a guide to the market, not a quotation. The price of the part we have in stock is on its own page.

About part number 8W6121764C

A front bumper air guide is part of the vehicle's cooling and aerodynamic system. Positioned behind the front bumper trim, it channels incoming airflow directly towards the radiator and engine bay components rather than letting it scatter. When functioning correctly, it helps maintain optimal engine operating temperatures and reduces drag, ensuring efficient performance without any unusual wind noise from the front panel area.

To confirm that this component is correct for your vehicle, you must check that the manufacturer part number matches 8W6121764C exactly. On a plastic air duct like this, the part number is usually stamped or moulded directly into the plastic surface on the reverse side or along one of the mounting flanges. Matching this specific reference number is the only way to guarantee a precise fit.

These guides are commonly replaced following minor front-end impact damage, as the rigid plastic can crack, snap at the mounting tabs, or go missing altogether. When replacing this unit, you will typically need replacement plastic trim clips, push-rivets, or small threaded fasteners to secure it firmly to the inner bumper structure and surrounding ducting.

About this kind of part: wheel arch liners

A wheel arch liner is the moulded plastic or felted shell inside a wheel arch that keeps water, salt and stones off the inner wing, the suspension and the wiring. It is hidden and it is not structural, but it is the part that decides whether the metal behind it rusts, so a missing or torn liner is a slow problem rather than a cosmetic one. Mudflaps, undertrays and the air ducts that feed the brakes are the same kind of part doing the same job elsewhere under the car.

Why people replace one

  • The liner has torn away from its clips, usually after a wheel has picked it up at speed, and it now rubs the tyre.
  • Road debris or a kerb has split the liner along an edge.
  • The clips and screws have rusted away or pulled through, so the liner hangs down and catches.
  • The liner was removed for a repair and never refitted, which leaves the inner wing exposed.
  • A felted liner has become waterlogged and heavy and has pulled itself off its fixings.

Fitting it

  • The wheel normally has to come off, and the car must be supported properly on axle stands rather than a jack alone.
  • A liner is held by a mixture of plastic screws, clips and expanding rivets around its edge, and most of them break on removal, so a set of fixings is worth having before starting.
  • Fit the fixings loosely around the whole edge first and tighten them afterwards, otherwise the last few holes will not line up.
  • With the liner out, it is worth looking at the metal behind it. A liner that has been missing for a while has usually exposed something worth seeing.

Making sure it is the right one

  • Match the part number moulded into the liner. Front and rear differ, the two sides differ, and a model with wider arches takes a different part again.
  • Count the fixing holes and compare their positions with the old liner. This is the quickest way to tell two similar liners apart.
  • Check whether yours has cut-outs or ducts for brake cooling, a sensor or a washer line. These vary by specification.
  • Compare the material. The same position is made as hard plastic on one version and as a felted shell on another, and they use different fixings.

What to look for in the photographs

A Part number — Moulded into the inner face. It is often the only difference between two liners that look the same.
B Fixing holes — The holes, slots and rivet points around the edge. Count them and compare the spacing with your own liner.
C Cut-outs and ducts — Any opening for brake cooling, a sensor or a washer line. These vary by specification and are part of the match.
D Edge condition — Look along the whole rim, particularly where the fixings pass through. This is where a liner tears out.
E Material — Hard plastic or a felted shell. They are not interchangeable and they take different fixings.

This section describes wheel arch liners 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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