What is the construction and purpose of horns?

Horns are electric signal elements mounted in a car, most often in the front part of the body. A typical horn consists of a housing, a diaphragm, working contacts, a bracket, and an electrical connector. Its task is to generate a clear acoustic signal when the driver presses the button. Depending on the vehicle version, it may appear as a single signal or a set of two tones.

What are horns used for?

Horns are used to warn other road users and transmit a short acoustic signal in traffic situations. A functional sound signal system increases safety because it allows for a quick reaction when a light signal or the vehicle's presence alone is insufficient. This component works with the steering wheel button, relay, and fuse, so its operation also depends on the state of the electrical system. A malfunction may mean either a failure of the horn itself or a problem in the control circuit.

What is the construction and function of a horn mount?

A horn mount is an element connecting the sound signal to the vehicle structure at a designated mounting point. It serves to stably seat the housing, limit vibrations, and maintain the correct position relative to covers and wires. In practice, its shape, mounting hole, and bracket length may differ depending on the car model. A damaged or corroded mount can cause looseness, noise, and problems with proper part installation.

How to select a horn for a specific car?

It is safest to compare the OEM part number, interchangeable numbers, connector type, and mounting method. It is also worth checking whether the car has a single-tone or dual-tone system and whether the part fits the pre-facelift or post-facelift version. If horns appear in pairs, it is good to also verify the mounting side and the completeness of the brackets.

What symptoms indicate a problem with the horn or installation?

The most common symptoms are no reaction after pressing the button, a quiet signal, intermittent operation, or a distorted tone. Such symptoms may result from a damaged diaphragm, connector corrosion, a broken wire, or a faulty relay. In diagnostics, it is also worth checking the fuse and the condition of the ground point.

How to take care of horns after installation?

After installation, it is worth periodically checking the cleanliness of the housing, the condition of the plug, and the security of the mounting. A horn operating in a zone exposed to water and dirt should be checked during front-end inspections and after body repairs. A quick reaction to a weakening signal allows you to avoid further damage to contacts and brackets.

Horns

At the Global Parts automotive store, we offer a wide selection of original used car parts, including horns for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen and others. The horns we offer undergo quality control so that you can be sure that you are receiving a top-class product.

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Audi Q3 8U Horn Signal Fanfare Low Tone 400Hz Front Left N/S 8U0951209

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Porsche Cayenne Horn Fanfare Signal Siren Low Tone Pitch 7P5951183E

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Mercedes-Benz C W203 Rear Right Centre Seat Belt Buckle Tensioner A2038600269

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Mercedes X253 Alarm Siren Horn Signal Low Tone Sound Left N/S 510Hz A2535422200

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Audi S7 4G8 Alarm Siren Body Sound Impact Actuator Speaker 4H0907601C

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Mercedes W204 W212 Horn Signal Fanfare A0065421520

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Ford Fiesta Mk7 Double Horn Signal Low High Tone Pitch Set AA6T-13A803-AB

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Mercedes-Benz S211 W211 Front Left Right Seat Safety Belt Buckle A2118603369

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Part no. 8P0951229

Horn Signal Audi A3 8P Fanfare High Tone Pitch Siren 8P0951229

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Part no. 7394075

Horn Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 7394075

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Part no. 8E0961223A

Audi A4 B7 Horn Sound Signal Fanfare Siren 8E0961223A

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Part no. A0065420820

Mercedes W221 Fanfare 510Hz Front Left N/S Horn Sound Signal A0065420820

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Part no. 6G9N-19G229-DG

Range Rover L405 Horn Signal Fanfare Alarm Horn Siren 6G9N-19G229-DG

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Part no. DS7T-19N217-AA

Ford Mondeo Mk5 Alarm Siren Horn Fanfare Module Control Unit DS7T-19N217-AA

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Horn Signal Mercedes W212 E63 AMG Fanfare High Tone Horn Signal A2215420120

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Part no. 4K0035916A

Audi A6 C8 Engine Sound Speaker Box 4K0035916A

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Part no. A0045428120

Horn Mercedes-Benz C CLK S Class C209 W203 W220 Signal Fanfare A0045428120

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Part no. 8P0951223

Audi A3 8P High Tone Horn Fanfare Signal Alarm Siren 8P0951223

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Mercedes-Benz CL S Class C215 W220 Horn Signal Fanfare Right O/S A0045428020

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Mercedes-Benz E-Class S211 W211 Low Tone Horn Signal Woofer Fanfare A0045429120

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Part no. AMR3467

Land Rover Discovery 2 L318 Horn Alarm Signal Fanfare AMR3467

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Part no. 8495329

Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 8495329

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Mercedes-Benz E-Class S211 W211 Parktronic Bumper Parking Sensor A2118213058

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Part no. 7P5951184E

Porsche Cayenne 92A Horn Sound Signal Fanfare Alarm High Tone Siren 7P5951184E

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Part no. 6M2T-13A803-AD

Ford S-Max Horn Signal Alarm Siren Double Twin 6M2T-13A803-AD

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Mercedes-Benz S W220 1 Front Left Seat Safety Belt Buckle Tensioner A2208601769

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BMW 1 Series E87 Horn High Pitch Tone Fanfare 7171750

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Part no. A4535420400

Smart ForTwo C453 Renault Twingo III Horn Signal Fanfare A4535420400

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Part no. 4H0951221B

Skoda Octavia IV Horn Signal Low Tone Pitch Fanfare 4H0951221B

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BMW F07 GT Horn Signal Pitch Fanfare Alarm Siren 7248686

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Volkswagen VW Touareg 7P Low Tone Pitch Horn Siren Signal Fanfare 7P6951221A

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Horn Signal Mercedes W204 W212 Fanfare Sound Alarm High Tone Siren A0055427920

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Ford Focus III Horn Signal Fanfare Sirene Alarm BM5T-13A803-AC BM5T-13A803-AD

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BMW MINI Cooper R50 R53 Bracket Aternative Power Siren 6930052

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Horn Signal Mercedes W203 W219 W229 Fanfare High Tone 510Hz A0055426620

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Volkswagen Golf CD1 Signal Air Horn High Tone 5Q0951223D

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Peugeot 307 Horn Signal Fanfare Sound Alarm High Tone Siren 6236E3

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BMW F22 F30 F32 F80 M3 F82 M4 LCI 1 Horn Low Pitch Tone Signal Fanfare 7400706

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BMW 1 3 Series F20 F21 F30 F31 1 Fanfare Horn High Tone Electronic 7300975

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Porsche Carrera 996 Horn Signal Fanfare Alarm System Unit 99663711701

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Horn Signal Mercedes W212 E63 AMG Fanfare Low Tone Horn Signal Siren A2215420020

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Ford Transit Horn Signal Fanfare Siren Pitch 6C1T13A803AA

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BMW 3 Series E36 Horn Low Pitch Tones Signal Siren Alarm 400 Hz 8372737

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BMW G20 G20 G20 LCI G21 G22 G42 Alarm Horn Signal Siren High Pitch 7492205

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BMW 3 Series E36 Horn Low Pitch Tones Signal Siren Alarm 400 Hz 8372738

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Part no. AV1T-13A803-AC

Ford Fiesta Mk7 Twin Horn Assembly Low & High Tone Signal AV1T-13A803-AC

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Land Rover Freelander 2 L359 Horn Signals Dual Tone DH52-13A803-AC

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Seat Ibiza 6J Signal Horn High Tone Fanfare 6J0951206

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Mercedes-Benz C W203 1 Rear Right Centre Seat Belt Buckle Tensioner A2038600269

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Horn Signal BMW F20 F21 F30 F31 F32 F33 Low Tone Pitch Fanfare 7245422

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Range Rover Sport L320 Low Tone Horn Signal Siren Alarm YEB500080

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Mini F60 Countryman Horn Low Pitch Tone Signal Fanfare 8495328

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Ford Transit Custom Horn Signal Fanfare Siren Pitch BK2T-13802-AB

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Volkswagen Eos 1F Passat B6 Horn Signal Siren Left N/S 3C0951221A

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Part no. 6H52-13A803-AC

Land Rover Freelander 2 Horn Low High Tone Fanfare Set 6H52-13A803-AC

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Mercedes-Benz S-Class W221 Anti-Theft Alarm Siren Horn Signal A2218208526

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Mercedes S211 W211 Tone Horn Signal Woofer 420Hz Left N/S A0055426720

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Range Rover Velar L560 Electric Horn Signal Left N/S M8A2-13801-AA

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Mercedes CL C118 W177 Anti Theft Alarm Siren Horn Signal Fanfare A2239005936

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Audi Q3 F3 Horn Signal Fan Fare Low Tone Pitch Siren 5Q0951221D

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VW Volkswagen Polo 6R Signal Air Horn High Tone Pitch Fanfare 6R0951223B

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Mercedes S211 W211 Front Horn Signal Fanfare Tone 420Hz A0055422520

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Mini F55 Alarm Fanfare Siren Horn Signal Low Pitch Tone 5A020F9

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Audi TT 8N Horn Signal Fan Fare Low Tone Pitch Siren Left N/S 8N0951221

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Part no. A0045428720

Horn Mercedes W210 Horn Signal Fanfare Low Tone 400Hz A0045428720

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Part no. H1BT-13A803-BB

Ford Fiesta Mk7 Double Horn Signal Low High Tone Pitch Set H1BT-13A803-BB

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Part no. 1K8951605A

Volkswagen Scirocco MK3 Golf MK6 Seat Ibiza 6J Alarm Siren Horn 1K8951605A

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