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

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Warning Alarm Mercedes W220 W215 W211 Horn Siren A1718202526

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

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Alarm Siren Set Signal Security Safety Protection Kit Sensor Modules Mount

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Audi A6 C8 High Tone Horn Fanfare Right O/S 4K6951223

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Ford Transit Connect Mk1 Low Tone Pitch Horn Siren Signal 2T1T-13802-AG

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Seat Ibiza 6J Signal Horn Low Tone Fanfare 6J0951206C

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Horn Signal Citroen Berlingo Peugeot Partner Fanfare Alarm 9802888080

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BMW M2 F87 Horn Signal Alarm Siren High Pitch Tone 8077467

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BMW F20 F21 F22 F23 F30 F31 F32 F33 Siren Horn Signal High Tone Electric 7300975

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Mercedes W639 W903 Tone Horn Signal Fanfare A6395400076

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Audi TT 8N Horn Signal Fanfare High Tone Centre Right O/S 8N0951223A

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Part no. 8379711-1

BMW E46 Horn Signal Low Tone Pitch Fanfare Siren 8379710

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Part no. A2535422200

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

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Part no. 6C1T-13A803-AB

Ford Transit Mk7 Horn Signal Double Fanfare Siren Pitch 6C1T-13A803-AB

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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. AV6N-19G229-AE

Ford Focus Mk3 Anti Theft Alarm Horn Signal AV6N-19G229-AE

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Mercedes GLE C292 ML W166 Horn Tweeter Horn Signal 510Hz Fanfare A0075425320

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Part no. A0075425420

Mercedes GLE C292 ML W166 Horn Low Tone Signal 420Hz Fanfare A0075425420

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Part no. 9243750-1

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

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BMW G20 G21 G22 G23 G42 Horn Signal Alarm Fanfare Low Tone Pitch 7492206

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Part no. 7839345

BMW 5 6 Series E60 E61 LCI M5 Horn Signal High Tone Pitch 7839345

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Part no. 1908657

Ford Mustang GT Mk6 Horn Signal Fanfare Assembly Set FR3T-13A803-DA

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Part no. 8U0951209-1

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

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Part no. 80A951223

Audi Q5 Mk2 FY High Tone Horn Signal Alarm Siren 80A951223

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Part no. 4K6951221C

Audi A6 C8 Siren Horn Signal Low Tone Fanfare Right O/S Side 4K6951221C

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Part no. A0055422520

Mercedes S211 W211 Front Horn Signal Fanfare Tone 420Hz A0055422520

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Part no. 7P5951183E

Porsche Cayenne Horn Fanfare Signal Siren Low Tone Pitch 7P5951183E

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Part no. A0005428804

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

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Part no. A0065427720

Mercedes W166 High Tone Tweeter Horn Signal Fanfare Alarm 510Hz A0065427720

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Part no. A0075426920

Horn Signal Mercedes W204 W212 Fanfare High Tone 500Hz A0075426920

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Part no. 6R0951221A

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

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Part no. 6R0951223A

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

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Part no. 6R0951181C

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

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Part no. A0005405700

Horn Signal Mercedes W156 W176 W246 Fanfare Siren 500Hz Right O/S A0005405700

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Part no. A9068200085

Mercedes Sprinter W906 Horn Signal Fanfare Alarm Siren Pitch A9068200085

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Part no. 4G0951221

Audi A6 C7 A7 4G Low Tone Horn Signal Alarm 4G0951221

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Part no. 8495328

Mini F60 Countryman Horn Low Pitch Tone Signal Fanfare 8495328

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Part no. 3B0951223E

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

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Part no. 8379711

BMW 3 er E46 Horn Low Pitch 8379711

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Part no. 5N0951221B

VW Volkswagen Tiguan 5N Horn Fanfare Signal Low Tone 5N0951221A

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Part no. 7835736

BMW 5 6 Series E60 E61 LCI M5 Horn Signal Low Tone Pitch 7835736

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Part no. A0045429220

Mercedes S211 W211 High Tone Horn Signal Tweeter Fanfare A0045429220

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Part no. 8E0961223A

Audi A4 B7 Horn Sound Signal Fanfare Siren 8E0961223A

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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. A0065428020-1

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

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Part no. 7248686

BMW F07 GT Horn Signal Pitch Fanfare Alarm Siren 7248686

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Part no. A0065420720

Mercedes W221 Fanfare 420Hz Front Right O/S Horn Signal A0065420720

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Part no. A2475403206

Mercedes W177 Horn Signal Front Left Side N/S 420Hz Siren Signal A2475403206

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Part no. 5C0951221B

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

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Part no. 4K0035916A

Audi A6 C8 Engine Sound Speaker Box 4K0035916A

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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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Part no. A0065420820

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

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Part no. 1K0951221B

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

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

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BMW F10 F11 F20 F30 Alternative Power Siren Inclination Indicat Alarm 9493759

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

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Mercedes W204 Anti-Theft Alarm Siren Horn Signal Bracket Holder A2045456740

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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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Part no. 256105748R

Renault Trafic III Vauxhall Vivaro B Horn Sound Signal Fanfare Siren 256105748R

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BMW X3 F25 X4 F26 Fanfare Horn High Pitch Tone Signal 7217703

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Horn Signal Mercedes W213 C238 C257 Alarm Siren High Tone Left N/S A2135424400

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

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Mini F55 F56 F57 Single Horn Cabel Wiring 9396058

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

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Mercedes W204 Anti-Theft Alarm Siren Horn Signal Bracket Holder A2045456740

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

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Smart ForTwo C453 Renault Twingo III Horn Signal Fanfare A4535420400

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

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Skoda Octavia IV Horn Signal Low Tone Pitch Fanfare 4H0951221B

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

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

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Audi A1 8X Horn Signal Fare Low Tone Pitch Siren 8X0951223B

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BMW MINI Cooper R50 R53 Bracket Aternative Power Siren 6930052

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

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Horn Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 7394075

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Horn High BMW F40 F44 Horn Fanfare Pitch Tone Signal 7214930

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Mercedes ML W163 Anti Theft Alarm Siren Horn Signal A1635420120

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

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

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

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

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

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Horn Mercedes W210 Horn Signal Fanfare Low Tone 400Hz A0045428720

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Volkswagen Golf CD1 Signal Air Horn High Tone 5Q0951223D

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

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Volkswagen Touareg 7L Horn Sound Signal Fanfare Alarm High Tone Siren 3DD951223A

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

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Volkswagen Touareg 7L Horn Sound Signal Fanfare Alarm Low Tone Siren 3DD951221A

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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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Mercedes W205 Horn Signal Alarm Siren High Tone 510Hz A2055421520

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Part no. 6J0951206

Seat Ibiza 6J Signal Horn High Tone Fanfare 6J0951206

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