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

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Part no. A0065427920

Mercedes R172 Horn Signal Alarm Siren High Tone Front Left N/S A0065427920

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Part no. A0065429120

Mercedes R172 Horn Signal Low Tone Pitch Fanfare A0065429120

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Part no. 8W0951221

Audi A4 B9 Alarm Siren Horn Signal Low Tone Fanfare Right O/S Side 8W0951221

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Part no. 7192036

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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Part no. 7248686

BMW F07 GT Horn Signal Pitch Fanfare Alarm Siren 7248686

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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. A0055427920

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

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Part no. 6930052

BMW MINI Cooper R50 R53 Bracket Aternative Power Siren 6930052

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Part no. A0055426620

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

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Part no. 5Q0951223D-1

Volkswagen Golf CD1 Signal Air Horn High Tone 5Q0951223D

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Part no. 6236E3

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

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Part no. 7400706-1

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

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Part no. 7300975-1

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

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Part no. 5C0951221B

Volkswagen Touran 1T Signal Air Horn Low Tone Pitch Fanfare 5C0951221B

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Part no. LR026039

Range Rover Evoque L538 Electric Signal Horn Alarm Pair BJ32-13A803-AC

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Part no. 6C1T13A803AA

Ford Transit Horn Signal Fanfare Siren Pitch 6C1T13A803AA

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Part no. 8372737

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

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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. 8372738

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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Part no. DH52-13A803-AC

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

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Part no. 6J0951206

Seat Ibiza 6J Signal Horn High Tone Fanfare 6J0951206

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Part no. A2038600269-1

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

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Part no. 8X0951209D

Audi A1 S1 8X Alarm Horn Signal Single Low Tone Left N/S 8X0951209D

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Part no. 7245422-1

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

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Part no. YEB500080

Range Rover Sport L320 Low Tone Horn Signal Siren Alarm YEB500080

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Part no. 8495328

Mini F60 Countryman Horn Low Pitch Tone Signal Fanfare 8495328

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Part no. BK2T13802AB

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

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Part no. 3C0951221A

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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Part no. A2218208526

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

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Part no. A0055426720-1

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

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Part no. A2239005936

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

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Part no. 5Q0951221D

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

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Part no. 6R0951223B

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

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Part no. 8E0951221A

Audi A4 B7 Front Low Tone Horn Fanfare Siren Alarm Signal 8E0951221A

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Part no. A0055422520

Mercedes S211 W211 Front Horn Signal Fanfare Tone 420Hz A0055422520

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Part no. 5A020F9

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

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Part no. 8N0951221

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. 1K0951221B

Skoda Octavia II Horn Signal Fan Fare Siren Low Tone 1K0951221B

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Part no. 1K8951605A

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

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