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-Class W221 Anti-Theft Alarm Siren Horn Signal A2218208526

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BMW E60 E61 E65 E81 E87 E90 E91 E92 Horn Signal Anti Theft Alarm Siren 6936009

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Peugeot 207 Horn Sound Signal Fanfare Alarm High Tone Siren 9682892280

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Range Rover Velar L560 Dual Note Electric Horn Front Right O/S M8A2-13802-AB

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Mercedes-Benz CLK-Class W208 Horn Signal Fanfare Low Tone 420Hz A0045427820

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Mercedes S211 W211 Front Horn Signal Fanfare Tone 420Hz A0055422520

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

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Fanfare Horn Citroen Relay Peugeot Boxer Signal Low Tone Pitch 1371440080

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Audi Q2 GA Fanfare Horn Signal Low Tone 2K5951221A

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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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High Pitch Horn BMW F30 F31 F32 G11 G30 G31 G12 Fanfare Sound Signal 7342945

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Horn Signal Alarm Audi A4 B9 A5 F5 High Pitch Tone 8W0951223

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Horn High BMW F40 F44 Horn Fanfare Pitch Tone Signal 7214930

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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BMW 1 3 5 7 SERIES E60 E61 E65 E66 E67 E87 E90 Alarm Siren 6948392

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Audi Q2 GA High Tone Signal Fanfare Horn Warning Signal 3B0951223E

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Horn Signal Mercedes W124 W202 W210 Fanfare High Tone Siren 485Hz A0045423620

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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

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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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Mercedes W204 W212 C218 Horn Signal Fanfare High Tone Siren 500Hz A0065428020

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Mercedes C207 Coupe Horn Signal Fanfare 420Hz Front Right O/S A2075421720

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Audi A6 C8 Engine Sound Speaker Box 4K0035916A

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Part no. YEB500080-1

Land Rover Range Rover Sport L320 Low Tone Horn Signal Siren Alarm YEB500080

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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 BMW F45 F46 LCI Fanfare Low Tone Pitch Siren 7492891

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

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Horn Signal Mercedes W169 W202 W203 ML W164 Fanfare Right O/S A0065429020

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Audi A5 8T Alarm Siren Horn Signal Low Tone Fanfare Right O/S Side 8T0951221A

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Horn Signal Mercedes C118 W177 W247 Fanfare Pitch Siren 510Hz A2475403306

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

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Land Rover Discovery 2 L318 Horn Alarm Signal Fanfare AMR3467

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BMW 5 Series E60 E61 LCI M5 Horn High Pitch Tone Fanfare 7835734

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

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Mercedes W203 S203 CL203 W463 Horn Signal Fanfare Left N/S A4615420020

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

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VW Volkswagen Polo 6R Signal Air Horn Low Tone Pitch Fanfare 6R0951221A

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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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VW Volkswagen Polo 6R Signal Air Horn High Tone Pitch Fanfare 6R0951223A

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

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Peugeot 3008 Twin Double Horn Signal Fanfare High Low Tone Pitch 9657476680

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

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Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 8495329

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Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 8495329

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Smart ForTwo C453 Renault Twingo III Horn Signal Fanfare A4535420400

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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

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BMW E88 Convertible Anti Theft Alarm Siren Bracket Mount Holder 9137670

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

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

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Audi A6 C6 Horn Signal Alarm Siren Bracket Holder Mounting 4F0951229

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Anti Theft Alarm BMW E87 E90 E91 E92 Siren Horn Sound Signal Module 6977755

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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 W907 W910 Horn Signal Fanfare Siren A9065400076

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Mercedes Sprinter W906 Horn Signal Fanfare Alarm Siren Pitch A9068200085

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

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Horn Signal Mercedes W204 W212 Fanfare High Tone Siren Pitch A0065421620

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Horn Mercedes W176 W246 Fanfare Pitch Electronic Module Unit A0005406103

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Porsche Carrera 996 Horn Signal Fanfare Alarm System Unit 99663711701

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

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

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

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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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Part no. BM5T-13A803-AC-1

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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