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991555120001E0
Product Information
Product Information
Lining Door Sill Driver's Side Inner, Black.
The Genuine Porsche Inner Door Sill Lining 991555120001E0 is a replacement interior trim component for the driver's side, supplied in Black for compatible Porsche vehicles.

Fits:
  • Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
  • Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L 
 
Diagram Ref No 2

Located along the inner door sill area, this lining provides a neat finished surface between the doorway, interior trim and surrounding body structure. It also helps protect the covered sill area from everyday contact, footwear, dirt and minor abrasion as occupants enter and leave the vehicle.

Door sill trim is frequently touched and stepped over, making it particularly susceptible to scratches, scuffs, cracked mounting points and general cosmetic deterioration. Replacing a damaged or missing lining restores the clean factory appearance of the doorway and ensures the trim remains correctly secured.

What This Product Does:
The inner door sill lining covers and finishes the relevant section of the doorway and sill area.

Its primary functions include:

  • Providing a finished interior appearance
  • Covering the underlying sill and mounting areas
  • Helping protect covered surfaces from dirt and minor abrasion
  • Providing a neat transition between adjoining interior trim components
  • Concealing clips, fixings and bodywork where applicable
  • Maintaining the intended factory interior presentation
  • Supporting correct alignment of surrounding trim

Although primarily an interior trim component, secure installation is important to prevent movement, rattles and further damage.

Symptoms Of Wear Or Failure:
Common signs that replacement may be required include:

  • Scratches
  • Scuffs
  • Deep surface marks
  • Cracks or splits
  • Broken edges
  • Chipped sections
  • Broken retaining clips or mounting tabs
  • Loose trim
  • Trim lifting away from the sill
  • Uneven gaps
  • Rattling or movement
  • Warping or distortion
  • Fading or discolouration
  • Damage following interior removal or repair
  • Missing trim sections

Cosmetic marks may not affect function, but broken mounting points or severe distortion can prevent the lining from remaining securely installed.

Why Replacement Matters:
Replacing a damaged driver's side inner door sill lining helps restore the appearance, protection and fit of the doorway trim.

A new lining can help:

  • Restore the original Black interior finish
  • Replace cracked or broken trim
  • Correct loose or lifting sections
  • Restore proper alignment
  • Eliminate rattles caused by damaged trim
  • Cover the intended sill and mounting areas
  • Protect underlying surfaces from everyday contact
  • Maintain a clean factory-style interior

For vehicles being restored, detailed or prepared for resale, replacing heavily marked sill trim can make a noticeable improvement to the cabin presentation.



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991555120001E0

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