Skip to product information
Rear Seat Belt Cover Trim 4K8863358 Audi A7 S7 RS7 4K8 Original OEM Sill

Original Trunk Loading Sill Cover / Flap – Audi A7 Sportback (Type 4K8) – 4K8863358

Original factory cover concealing the inner trunk sill / loading edge cover (rear sill trim cover / emergency opening inspection flap – Abdeckung Schlossträgerblende / Ladekantenabdeckung Kappe / Rear Trunk Sill Scuff Plate Plug Trim), designed for Audi A7 Sportback, S7 and RS7 (4K8 / C8 generation), manufactured from model year 2018 to 2026+, including versions with TFSI petrol engines (40 TFSI, 45 TFSI, 55 TFSI, RS7 4.0 V8 TFSI), high-torque TDI engines (40 TDI, 45 TDI, 50 TDI, S7 TDI) and TFSI e hybrid models with quattro all-wheel drive, based on the modular MLB Evo platform.

Original Audi OE interior trim component. Made of durable technical plastic (ABS/PC) with a matte texture precisely matched to the finish of the lower rear sill cover. The cover is fitted into the trunk loading sill socket – concealing technical mounting points (frame/lock screws), emergency tailgate opening mechanism inspection holes or cargo hook mounting points. It ensures the factory-standard appearance of the cargo area, protecting sensitive mechanisms beneath the cover from dust, sand and small objects carried in the trunk.

Technical specifications:

  • Catalog part number (OE): 4K8863358 / 4K8 863 358 (and related trim/color codes, e.g. 4K8863358 4PK – Soul / Schwarz / black; revisions from the 4K8863358A series)

  • System / Category: Interior and trunk components / Covers, sill strips, rear sill covers (Trunk Sill Cover Cap / Abdeckung Ladekante)

  • Mounting location: Rear trunk – loading edge cover / trunk sill strip (inner rear sill)

  • Color / Texture: Factory Audi black (Soul / Schwarz) with a subtle matte texture

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

  • Production years: from 2018 to 2026+ (all engine and equipment versions)

  • Steering wheel side: Left (LHD) and Right (RHD) – universal component

  • Condition: Original part, used (very good condition – plastic is completely free from cracks, face free from deep scratches, burrs or broken edges, all mounting teeth and clips are 100% functional)

  • Manufacturer: Audi AG (Original OEM)

Main application:

  • Audi:

    • A7 Sportback (Type 4K8) – model years 2018 to 2026+ (all versions: A7, S7, RS7)

(Note: Strictly designed for the Audi A7 Sportback 4K8 generation trunk sill cover. Not suitable for A6 Saloon 4K2, A6 Avant 4K5 models or the older A7 4G8 generation due to the different profile of the sill strip.)

Installation and operating instructions

Each cover is cleaned before shipping and checked for the completeness of the side expansion teeth.

Fitment / installation tip: Number 4K8863358 specifies the factory concealing flap for the trunk loading edge trim. When loading heavy suitcases or cargo, this component is often scratched, pried loose or lost, leaving an unsightly opening in the sill. It is fitted directly by pressing it in (Plug & Play) – simply press the component into the cover socket until the clips lock. The original OEM component guarantees a flush fit with the trim surface, an identical shade of black and a secure hold without the risk of popping out when moving luggage. Before purchase, we recommend comparing the OE number embossed on the underside of the component or verifying it using the vehicle's VIN.

Similar products