Fuel Line and Underbody Protective Cover – 4K8201974A
Original lower protective cover for the fuel rail and underbody lines (contoured underbody shield protecting fuel pipes and the longitudinal installation), designed for Audi A7 Sportback, S7 and RS7 (4K / 4K8 generation) models produced from 2018 to 2026, including versions with 3.0 V6 TFSI (55 TFSI), 2.0 TFSI (40/45 TFSI), TDI diesel engines, and top-spec 2.9 TFSI (S7) and 4.0 V8 TFSI (RS7) models based on the modular MLBevo longitudinal platform.
Original VAG underbody aerodynamic and protective component. Made of reinforced thermoplastic material resistant to stone chips, sandblasting, road salt, moisture, and automotive chemicals. Mounted along the floor panel / longitudinal beams in the fuel line and supply system routing section. It provides direct mechanical protection for rigid and flexible fuel lines against physical damage when driving over uneven surfaces, while also smoothing the airflow underneath the vehicle, reducing aerodynamic drag and noise.
Technical specifications:
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Catalog part number (OE):
4K8201974A/4K8 201 974 A(interchangeable with revisions in the4K8201974and4K8201974Bseries) -
System / Category: Fuel supply system and underbody covers / Fuel pipe and floor panel covers (Fuel Line Protective Cover / Underbody Fuel Pipe Splash Shield)
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Function: Protective plate / underbody fuel line cover
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Material / Color: Black (VAG OEM structural plastic with enhanced mechanical resistance)
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Mounting location: Vehicle underbody – center-rear area along the tunnel/longitudinal beam (fuel supply line cover)
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Dedicated model: Audi A7 Sportback / S7 / RS7 (type 4K8)
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Steering side: Left (LHD) and Right (RHD) – universal component
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Mounting: Factory mounting points for expansion bolts, screw-in clips, and underbody screws
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Condition: Original used part (100% functional – no cracks, no broken mounting holes, no deep curb scuffs, geometry preserved)
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Manufacturer: Audi AG / VAG (OEM original)
Main application:
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Audi:
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A7 Sportback (type 4K8) – model years 2018 to 2026 (all TFSI, TDI, and MHEV engine versions)
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S7 Sportback (type 4K8) – model years 2019 to 2026
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RS7 Sportback (type 4K8) – model years 2019 to 2026
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Fitment guarantee and VIN verification
Each cover undergoes a detailed inspection of the mounting flanges, checking for structural cracks, and is washed before shipping.
Fitment / installation note: The initial 4K8 designation (fuel system group
201) specifies the contouring of the cover for the Sportback body floor panel in the Audi A7. This component is directly exposed to stone chips from the wheels or underbody contact with speed bumps and high curbs. The absence of a cover or its breakage exposes fuel lines to direct stone impacts, creating a risk of fuel line leakage. The original OEM part guarantees a perfect fit with the floor clips without lifting or rattling at highway speeds. Before purchase, we recommend comparing the OE number stamped on the cover or verifying fitment using the vehicle's VIN.