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

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Mercedes Sprinter W906 Horn Signal Fanfare Alarm Siren Pitch A9068200085

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Land Rover Discovery Sport L550 Electric Signal Horn Double BJ32-13A803-AD

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

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

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

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

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

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

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Mercedes W639 W903 Tone Horn Signal Fanfare A6395400076

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Mercedes CLK W203 W209 Anti Theft Alarm Siren Horn Signal A2038203826

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

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Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Ford Focus Mk3 Horn Signals Alarm Fanfare Pair Set X2 BM5T-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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Audi Q2 GA Horn Signal Fanfare Alarm Low Tone Left N/S 5Q0951221J

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

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Range Rover Sport L320 Anti Theft Alarm Siren Signal Unit YWK500040

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

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

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

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Fanfare Horn Citroen Relay Peugeot Boxer Signal Low Tone Pitch 1371440080

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

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Mercedes S211 W211 High Tone Horn Signal Tweeter Fanfare A0045429220

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

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

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

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Mercedes W245 Horn Signal Woofer Fanfare A0065421720

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

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Peugeot Boxer Citroen Berlingo Relay Fiat Ducato Alarm Siren Signal 1367165080

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

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Ford Transit Mk8 Horn Signal Low High Tone Set GK2T13A803AA

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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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Volkswagen VW Polo 9N Horn Signal Fanfare Siren 600951223B

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Ford Fiesta MK7 Horn Signal Fanfare Alarm 8V2T13802AB

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

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

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

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

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

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

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