Horn Sound Signal 4K6951221 Audi A7 4K8 A6 C8 Q8 Low-Tone Fanfare

Sound Signal / Horn (Warning Fanfare) – 4K6951221

Original sound signal / electromagnetic horn (fanfare of the vehicle's acoustic warning system), designed for Audi A7 Sportback (4K / 4K8 generation) and Audi A6 (C8 / 4K generation) cars, as well as other VAG group models based on the MLBevo platform.

Factory VAG electrical system component produced in cooperation with the FIAMM brand. It generates a loud, clear, and road-homologation-compliant warning sound at a specific frequency (it is part of the factory dual-tone high/low tone set mounted behind the front bumper).

Technical specifications:

• OE part number: 4K6951221 / 4K6 951 221 (interchangeable with series numbers 4K6951221A, 4K6951221B, complementary with 4K6951223)

• Function: Sound signal / horn / single-tone fanfare (Horn / Acoustic Warning Unit)

• Operating voltage: 12V

• Material: Weather-resistant plastic with a metal acoustic diaphragm

• Installation side: Front of the vehicle – front panel / front reinforcement (left or right side depending on the tone)

• Steering wheel side: Left (LHD – European version) and Right (RHD)

• Condition: Original part, used (100% functional, electrically tested – full and clear sound, no crackling, intact housing, clean connector socket contacts with no signs of oxidation)

• Manufacturer: Audi / VAG / FIAMM (OEM Original)

Main application:

• Audi:

  • A7 Sportback (4K8) – model years 2018 to 2024

  • S7 / RS7 Sportback (4K8) – model years 2019 to 2024

  • A6 Saloon / Avant / Allroad (C8 / 4K2 / 4K5) – model years 2018 to 2024

  • S6 / RS6 Avant (C8 / 4K8) – model years 2019 to 2024

  • Q7 / Q8 / E-Tron – selected model years of the MLBevo platform

Fitment guarantee and VIN verification

Each fanfare undergoes a 12V load operation test and an inspection of the sound tube snail inlet for tightness to ensure there is no road debris.

Fitment tip: The horn with number 4K6951221 works with the second-tone fanfare with number 4K6951223 in the vehicle. Before purchase, we recommend comparing the OE number on the label of the old part or verifying the selection using the vehicle's VIN number.