LAND ROVER DEFENDER 110 L633 2024 MID LEFT SIDE UNDERTRAY L8B2104C21AH

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LAND ROVER DEFENDER 110 L633 2024 MID LEFT SIDE UNDERTRAY L8B2104C21AH - part number L8B2104C21AH

LAND ROVER DEFENDER 110 L633 2024 MID LEFT SIDE UNDERTRAY L8B2104C21AH - part number L8B2104C21AH - view 2 LAND ROVER DEFENDER 110 L633 2024 MID LEFT SIDE UNDERTRAY L8B2104C21AH - part number L8B2104C21AH - view 3 LAND ROVER DEFENDER 110 L633 2024 MID LEFT SIDE UNDERTRAY L8B2104C21AH - part number L8B2104C21AH - view 4

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About part number L8B2104C21AH

An undertray is an exterior protection panel mounted beneath the underside of the vehicle. It attaches to the lower chassis and inner wing liners to shield the engine bay and lower mechanical components from road debris, surface water, dirt and salt. When installed correctly, it reduces drag under the floor and prevents loose stones from hitting vulnerable metal components, helping to keep the engine compartment clean and protected during driving.

To confirm that this undertray is the correct replacement for your vehicle, you must check that your original part displays the manufacturer part number L8B2104C21AH. On plastic splash guards and underbody covers, this number is typically stamped or moulded directly into the plastic on the upper or lower surface. Matching this exact part number is the only way to guarantee a correct fit, as mounting points and shapes vary across different vehicle specifications.

An undertray is usually replaced after suffering impact damage from speed ramps, high kerbs or off-road debris, or because its mounting holes have torn. When replacing this component, you will usually need new plastic trim clips, bolts or quick-release fasteners to secure it firmly in position, as the original fixings are often lost, bent or broken during removal.

  • Part type: Splash Guards & Mud Flaps.
  • Specification: colour Black; country of origin Germany.
  • Position on the vehicle: Left.
  • Also numbered: Genuine.

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.

Parts we have that go with this one

Most repairs need more than one part, and these came off the same area of the vehicle. Each has its own page, which says whether we have one in stock today.

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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