Heater Air Duct / Air Distribution Duct – 4K1819152

Original air duct for the blower and heater unit (HVAC system ventilation duct responsible for delivering air to the lower cockpit area, footwell vents, or center tunnel), designed for Audi A7 Sportback, S7 and RS7 (4K / 4K8 generation) and Audi A6 C8 (4K2 / 4K5 / 4KA type) 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-tier S and RS models based on the modular MLBevo longitudinal platform.

Original VAG ventilation and air conditioning system component. Made of durable engineering plastic with high thermal resistance, resistant to deformation caused by the continuous flow of hot and cold air. Mounted directly to the central heater unit under the dashboard. Ensures precise, quiet, and lossless transmission of the airflow without whistling or pressure drops within the cabin.

Technical specifications:

• Catalog part number (OE): 4K1819152 / 4K1 819 152 (interchangeable with revisions in the 4K1819152A, 4K1819152B series)

• System / Category: Heating, ventilation, and air conditioning (HVAC) / Air ducts, ventilation air channels, and distribution ducts (Air Duct / Ventilation Air Channel Footwell & Center Console)

• Function: Heater air distribution duct / cabin air duct

• Material: VAG OEM polymer material resistant to high temperatures

• Installation location: Vehicle interior – under the dashboard / in the lower area of the heater module and center tunnel

• Dedicated model: Audi A7 Sportback / S7 / RS7 (4K8 type) and Audi A6 / Avant / Allroad (4K / C8 type)

• Steering side: Left (LHD – European version)

• Installation: Press-fit onto original mounting flanges / mounting clips

• Condition: Original used part (100% functional – intact plastic, no cracks, no thermal deformation, mounting flanges undamaged)

• Manufacturer: Audi AG / VAG (Original OEM)

Main application:

• Audi:

  • A7 Sportback (4K8 type) – model years 2018 to 2026 (all TFSI, TDI, and MHEV engine versions)

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

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

  • A6 / A6 Avant / Allroad (4K2 / 4K5 / 4KA - C8 type) – model years 2018 to 2026

  • S6 / RS6 Avant (4K - C8 type) – model years 2019 to 2026

Fitment guarantee and VIN verification

Each air duct undergoes an inspection of the mounting edges and a check for mechanical damage before packaging.

Fitment / installation note: The 4K1 prefix (ventilation group 819) specifies the part designed for the European body version with left-hand drive (LHD). Cracked air ducts cause airflow to leak under the cockpit trim, reducing airflow to the footwell and windshield and causing fan noise. Using the original OEM duct ensures a tight fit with the HVAC module vents without the need for any modifications. Before purchasing, we recommend comparing the OE number embossed on the part or verifying it using the vehicle's VIN.