Left Floor Air Duct / Driver Footwell Air Supply Duct – 4K8819501

Original left floor air duct (lower air distribution duct / air supply duct for the driver's footwell and floor), 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, TDI diesel engines, and S and RS variants based on the modular MLBevo longitudinal platform.

Original VAG HVAC (heating, ventilation, and air conditioning) system component. Made of lightweight, deformation-resistant thermoplastic engineering plastic that withstands high air temperatures. Mounted beneath the lower dashboard trim and floor carpeting on the left side (driver's side). It precisely directs the flow of warm or cool air from the heater unit to the driver's pedal and foot area (and towards the rear footwell area under the seat), ensuring a fully sealed system, no pressure loss, and quiet air circulation in the cabin.

Technical specifications:

• OE part number: 4K8819501 / 4K8 819 501 (interchangeable with revisions 4K8819501A, 4K8819501B; the right-hand side component is part number 4K8819502)

• System / Category: Interior components / Floor air supply and heating system (Floor Air Duct / Left Footwell Ventilation Duct)

• Function: Floor air supply duct / footwell air duct

• Installation side: Vehicle interior – floor area, left side (driver's side)

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

• Steering side: Left (LHD – European version)

• Construction: Injection-molded polymer with factory outlet nozzles and crimp flanges

• Condition: Original used part (100% functional – no cracks, no thermal deformation, straight profile, intact connection flanges, all factory clips and mounting sockets undamaged)

• Manufacturer: Audi AG / VAG (OEM original)

Main application:

• Audi:

  • A7 Sportback (type 4K8) – model years 2018 to 2026 (all engine versions: 40 TDI, 45 TFSI, 50 TDI, 55 TFSI 3.0 V6)

  • S7 Sportback (type 4K8) – model years 2019 to 2026 (2.9 V6 TFSI / 3.0 TDI)

  • RS7 Sportback (type 4K8) – model years 2019 to 2026 (4.0 V8 TFSI)

Fitment guarantee and VIN verification

Each duct undergoes a detailed flow test, inspection of the mounting flanges, and cleaning before shipping.

Fitment / installation note: The initial designation 4K8 (group 819) indicates the floor duct geometry profiled for the specific recesses in the floor panel, tunnel, and footwell of the Audi A7 Sportback model. Correct installation beneath the carpeting prevents the duct from being crushed when operating the pedals and ensures optimal heating of the footwell area. Before purchase, we recommend comparing the OE number stamped on the part body or verifying fitment using the vehicle's VIN.