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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Land Rover Discovery 3 L319 High Tone Pitch Signal Horn Fanfare 8H22-13801-AA

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Part no. 6R0951181C

Volkswagen Polo Mk5 6R Horn Fanfare Signal Bracket Holder 6R0951181C

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Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 8495329

-3%

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Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 8495329

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Mercedes GLC C253 Horn Signal Fanfare Front Right O/S Low Tone A2535422100

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Smart ForTwo C453 Renault Twingo III Horn Signal Fanfare A4535420400

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Part no. A0065421220-1

Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Part no. 4H0951221B

Skoda Octavia IV Horn Signal Low Tone Pitch Fanfare 4H0951221B

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Part no. H1BT-19N217-AB

Ford Fiesta Mk8 Puma Alarm Siren Horn Signal Module Assy H1BT-19N217-AB

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Part no. 9137670

BMW E88 Convertible Anti Theft Alarm Siren Bracket Mount Holder 9137670

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Part no. 7P6951221A

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

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Part no. 8492761

High Tone Horn BMW X1 F48 LCI X2 F39 Fanfare Siren Horn Pitch Signal 8492761

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

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BMW E46 Horn Signal Low Tone Pitch Fanfare Siren 8379710

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

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Mercedes Sprinter W906 Horn Signal Fanfare Alarm Siren Pitch A9068200085

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

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Horn Signal Citroen Berlingo Peugeot Partner Fanfare Alarm 9802888080

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

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Part no. 6236E3

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

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Part no. A0065421620

Horn Signal Mercedes W204 W212 Fanfare High Tone Siren Pitch A0065421620

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Part no. A0065429820

Mercedes W176 W246 Horn Signal Fanfare Front Left Horn Signal A0065429820

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Part no. A0005406103

Horn Mercedes W176 W246 Fanfare Pitch Electronic Module Unit A0005406103

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Part no. 99663711701

Porsche Carrera 996 Horn Signal Fanfare Alarm System Unit 99663711701

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Part no. 7492205

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

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Part no. DT1T-13A803-AD

Ford Transit Connect Mk2 Horn Signal Fanfare DT1T-13A803-AD

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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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Part no. 7404430

Horn BMW X3 G01 X3M F97 X4 G02 X4M F98 Low Pitch Tone Sound Signal Horn 7404430

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Ford Transit Mk8 Horn Signal Low High Tone Set GK2T13A803AA

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Seat Ibiza 6J Signal Horn High Tone Fanfare 6J0951206

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

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Audi A3 8P Horn Signal Fanfare High Pitch Tone 8P0951230

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Range Rover Sport L320 Low Tone Horn Signal Siren Alarm YEB500080

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Mercedes Sprinter W906 Horn Signal Fanfare Siren A9065400076

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Volkswagen Transporter T5 Alarm System Siren Anti Theft Signal 1J0951605A

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Mercedes SLK R172 Horn Signal Right O/S Fanfare 400Hz A0075426020

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Ford Mondeo Mk4 Horn Signals Alarm Fanfare Pair Set X2 6M2T-13A803-AC

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

-2%

Part no. 3C0951221A

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

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Horn Mercedes W205 Low Tone 420Hz Horn Signal Warning Alarm Siren A2055421420

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Ford Focus Mk3 Horn Signals Alarm Fanfare Pair Set X2 BM5T-13A803-AC

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Audi A4 B7 Horn Sound Signal Fanfare Siren 8E0961223A

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

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Part no. 8496204

BMW F70 F74 U06 X1 U11 X2 U10 Mini U25 Horn Signal Low Pitch Tone 8496204

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Horn Signal Mercedes W204 W212 Fanfare High Tone 500Hz A0075426920

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

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Part no. M8A2-13801-AA

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

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Mercedes-Benz Sprinter Vito W638 W639 W901 Horn Signal Fanfare A0065427420

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

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Horn Mercedes W210 Horn Signal Fanfare Low Tone 400Hz A0045428720

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Part no. A2239005936

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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Audi A4 B7 Alarm System Siren Anti-Theft Horn Signal 8L0951605A

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Mercedes-Benz E-Class W210 Horn Signal Fanfare High Tone 500Hz A0045429020

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Audi Q2 GA Horn Signal Fanfare Alarm Low Tone Left N/S 5Q0951221J

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Part no. A0045429120

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

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Part no. GK2T-13A803-AB

Ford Transit Mk8 Horn Signal Fanfare High Low Tone Set Pair GK2T-13A803-AB

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Mercedes SLK R172 Roadster Front Left N/S Horn Signal 510 Hz A0005428804

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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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Mercedes W176 W205 W207 W213 Anti-Theft Alarm Siren Horn Signal A2138201101

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Volkswagen VW Golf SV Mk8 Signal Air Horn High Tone 5Q0951223D

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