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Front Left Door LX7J Audi A7 S7 4K8

Original Left Front / Driver's Complete Door (Without Interior Trim) – Paint Code: LX7J (Manhattangrau Metallic)

Original factory left front door for a four-door coupé without window surrounds (left front door assembly without interior trim / complete driver's door wing – Tür Vorn Links Komplett ohne Türverkleidung / Frameless Front Left Door), designed for Audi A7 Sportback, S7 and RS7 (4K / 4K8 generation), produced from 2018 to 2026, including models with 3.0 V6 TFSI (55 TFSI / 340 hp), 2.0 TFSI (40/45 TFSI), S7 and RS7 variants, and TDI diesel engines with Mild Hybrid (MHEV 48V) and quattro drive, based on the modular longitudinal MLBevo platform.

Original VAG factory bodywork component. Manufactured using advanced hybrid technology (lightweight aluminum alloy construction with high-strength steel profiles for side-impact protection), ensuring high torsional rigidity and perfect panel gap alignment with the fender and rear door. Finished with a factory paint coating in dark gray metallic LX7J / X7J (Manhattangrau Metallic / Manhattan Gray Metallic). The door is offered as a complete door wing assembly (without interior trim) – the set includes an original frameless door window, electric window regulator with motor, central locking actuator, factory door wiring harness, exterior handle, complete set of seals, and hinges with opening limiter.

Technical specifications:

  • Catalog part number (OE body base):4K8831051 / 4K8 831 051 (and related revisions from the 4K8831051A,4K8831051B series; the right passenger side is designated with an even number 4K8831052)

  • System / Category: Bodywork components, doors and mechanisms / Left front door assembly, side panel (Front Left Door Assembly / Tür Vorne Links)

  • Paint code:LX7J / X7J (Manhattangrau Metallic / Manhattan Gray)

  • Side of the vehicle: Front – left side (driver's side)

  • Construction: Frameless aluminum door (Frameless Doors characteristic of the Sportback body style)

  • Component set:

    • Door body in original LX7J paint

    • Original left front door window (frameless)

    • Window regulator (guides, cables) with factory electric motor

    • Left front door lock with integrated central locking actuator and key cylinder

    • Factory front door wiring harness

    • Exterior handle in body color / handle mechanism

    • Complete set of edge seals, guide seals, and weatherstrips

    • Door hinges / opening limiter (The set does not include the interior door trim/panel or exterior mirror).

  • Dedicated model:Audi A7 Sportback / S7 / RS7 (type 4K8)

  • Steering side: Left (LHD – European / USA version)

  • Condition: Original part, used (100% functional – in very good condition, straight body, without filler or dents, lower edges intact without bends, lock and window regulator tested, paint coating well-maintained – ready for direct installation in the same color or optional cosmetic polishing)

  • Manufacturer: Audi AG / VAG (OEM Original)

Main application:

  • Audi:

    • A7 Sportback (type 4K8) – model years 2018 to 2026 (all engine versions and styling packages: Standard, S-Line, Black Edition)

    • S7 Sportback (type 4K8) – model years 2019 to 2026

    • RS7 Sportback (type 4K8) – model years 2019 to 2026

(Note: Due to the frameless window construction and A/B pillar line, the door does not fit Audi A6 Sedan / Avant models).

Fitment guarantee and VIN verification

Each door wing undergoes a paint coating thickness measurement using a gauge designed for aluminum surfaces, a window lowering mechanism functional test, and a lock engagement check before being offered for sale.

Fitment / installation tip: The initial designation 4K8 (body group 831 / 051) designates the frameless left front door designed for the A7 Sportback model. The frameless design requires precise alignment of the window geometry relative to the A-pillar and roof seals, including the proper operation of the micro-opening function when opening. Purchasing complete doors with a factory-installed window and regulator eliminates the need for tedious adjustment of the guide angles. The original paint coating in shade LX7J allows for direct installation without the need to mask the front fender and rear door. After installation, it is recommended to perform a window end-position calibration from the in-car control panel. Before purchase, we recommend confirming the paint code on the service sticker or verifying it using the vehicle's VIN.

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