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 A3 8V Horn Signal Fan Fare Low Tone Pitch Siren 5Q0951221A

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

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Part no. 9137670

BMW E88 Convertible Anti Theft Alarm Siren Bracket Mount Holder 9137670

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Part no. A2045456740-1

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

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Audi RS3 8V Horn Signal High Tone Pitch Fanfare Left N/S 5Q0951223B

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

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Part no. A0065427720

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

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Part no. A6395400076

Mercedes W639 W903 Tone Horn Signal Fanfare A6395400076

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Part no. A2038203826

Mercedes CLK W203 W209 Anti Theft Alarm Siren Horn Signal A2038203826

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Part no. 3B0951223E

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

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Part no. A1635420120

Mercedes ML W163 Anti Theft Alarm Siren Horn Signal A1635420120

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Part no. 6C1T-13802-AA

Ford Transit Mk7 Horn Signal Fanfare Alarm Low Ton 6C1T-13802-AA

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Part no. A0065429020

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

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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. A0048201826

Mercedes W169 Alarm Siren Trumpet Horn Signal A0048201826

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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. 7288095

BMW X5 E70 Alarm Siren Fanfare Horn High Pitch 7288095

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Part no. BM5T-13A803-AC

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

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Part no. 1J0951605A-1

Volkswagen Transporter T5 Alarm System Siren Anti Theft Signal 1J0951605A

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Part no. A0065421220-2

Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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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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Part no. 8496204

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

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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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Part no. K8D2-13801-AA

Land Rover Discovery Sport L550 Horn Siren Hooter High Tone K8D2-13801-AA

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Part no. A0045429020

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

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Part no. 5Q0951221L

VW Volkswagen Golf Mk7 Horn Signal Fanfare Low Tone Pitch Siren 5Q0951221L

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Part no. 7L0951221

Volkswagen Touareg 7L Horn Sound Signal Fanfare Alarm Low Tone Siren 6N0951221

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Part no. 7410917

BMW X1 F48 X2 F39 Horn Low Pitch Tone Signal 7410917

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Part no. 1S0951223A

Skoda Octavia IV Citigo NF1 Signal Horn High Tone Pitch Fanfare 1S0951223A

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Part no. YWK500040-1

Range Rover Sport L320 Anti Theft Alarm Siren Signal Unit YWK500040

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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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Part no. 7492891

Horn Signal BMW F45 F46 LCI Fanfare Low Tone Pitch Siren 7492891

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Part no. A2208601869-1

Mercedes-Benz S W220 Front Right Seat Safety Belt Buckle Tensioner A2208601869

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Part no. 1371440080

Fanfare Horn Citroen Relay Peugeot Boxer Signal Low Tone Pitch 1371440080

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Part no. A2135422800

Mercedes W213 C238 Horn Signal Alarm Siren High Tone Left N/S A2135422800

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Part no. 6948392

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

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Part no. A0075426920

Horn Signal Mercedes W204 W212 Fanfare High Tone 500Hz A0075426920

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Part no. 7214930

Horn High BMW F40 F44 Horn Fanfare Pitch Tone Signal 7214930

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Part no. A0045429220

Mercedes S211 W211 High Tone Horn Signal Tweeter Fanfare A0045429220

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Part no. YEB500072

Land Rover Discovery 3 L319 High Tone Pitch Sound Signal Horn Fanfare YEB500072

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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. 7839345

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

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Part no. 9802888080

Horn Signal Citroen Berlingo Peugeot Partner Fanfare Alarm 9802888080

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Part no. A0045427820

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

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Part no. 7214931-1

Horn BMW F40 F44 Fanfare Signal Unit Siren Sound Low Pitch Tone 7214931

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Part no. 2K5951221

VW Volkswagen Caddy 2K Mk3 Fanfare Horn Signal Low Tone Alarm 2K5951221

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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. 1K0951223B

Volkswagen VW Touran Scirocco Horn Signal Fanfare Siren High Tone 1K0951223B

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Part no. 6C1T-13A803-AB-1

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

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Part no. 8V2T-13832-AA

Ford Fiesta Mk7 Alarm Horn Signal Siren 8V2T-13832-AA

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Part no. A0065421220-1

Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Part no. 8P0951230

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

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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. A2118600169

Mercedes-Benz E-Class W211 Rear Left N/S Seat Belt Buckle A2118600169

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Part no. 4K6951223

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

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Part no. 2T1T-13802-AG

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

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Part no. 600951223B

Volkswagen VW Polo 9N Horn Signal Fanfare Siren 600951223B

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Part no. A0065429820

Mercedes W176 W246 Horn Signal Fanfare Front Left Horn Signal A0065429820

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Part no. 8V2T13802AB

Ford Fiesta MK7 Horn Signal Fanfare Alarm 8V2T13802AB

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Part no. 7300975-2

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

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Part no. A2075421720

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

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Part no. 8N0951223A

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

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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. A0005401910

Horn Signal Mercedes W117 W176 W246 Fanfare Siren Left N/S A0005406003

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Part no. AV6N-19G229-AE

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

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Part no. 7492206

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

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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. 3AA951221B

Seat Ibiza 6J Signal Horn Low Tone Fanfare 6J0951206C

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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. 8077467

BMW M2 F87 Horn Signal Alarm Siren High Pitch Tone 8077467

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Part no. A2038203826-1

Mercedes-Benz C CLK W203 W209 1 Anti-Theft Alarm Siren Horn Signal A2038203826

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Part no. A0005428904

Mercedes SLK R172 Roadster Front Right O/S Horn Signal 420 Hz A0005428904

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Part no. A2045456740

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

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Part no. 7P5951183E

Porsche Cayenne Horn Fanfare Signal Siren Low Tone Pitch 7P5951183E

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Part no. 5Q0951223D

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

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

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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. 4H0907601C

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

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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. 5Q0951223F

Audi A3 S3 8V Horn Signal Alarm Siren High Tone 5Q0951223F

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

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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. 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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Part no. A0045428020

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

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Part no. 9396058

Mini F55 F56 F57 Single Horn Cabel Wiring 9396058

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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. 8495329

Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 8495329

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Part no. A2118213058

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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