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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Skoda Fabia Rs 6y Roomster 5J Fanfare Signal Horn Low Tone 6Q0951221E

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Part no. 9802888080

Horn Signal Citroen Berlingo Peugeot Partner Fanfare Alarm 9802888080

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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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Land Rover Discovery 2 L318 Horn Alarm Signal Fanfare AMR3467

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Porsche Boxster 986 Alarm Siren Horn System 99661823704

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Part no. 3C0951223A

Volkswagen Passat CC Horn Signal Alarm High Tone 3C0951223A

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Part no. 7394075-1

Horn Mini F60 Countryman Horn High Pitch Tone Signal Fanfare 7394075

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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. 8H22-13801-AA

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

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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. 4K0035916A

Audi A6 C8 Engine Sound Speaker Box 4K0035916A

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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. BK2T-13A803-AB-1

Ford Transit Custom Mk8 Horn Signal Double Fanfare Siren Pitch BK2T-13A803-AB

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Part no. 8V2T13802AB

Ford Fiesta MK7 Horn Signal Fanfare Alarm 8V2T13802AB

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Part no. 8077468

BMW M2 F87 Horn Signal Alarm Siren Low Pitch Tone 8077468

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Part no. 99661823701

Porsche Boxster 986 Ani Theft Alarm Horn Siren Fanfare System 99661823701

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Part no. 99663515000

Porsche Boxster 986 Horn Signals Alarm Fanfare Low High Tone Set X2 99663515000

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Part no. 8J0951287

Audi TT 8J Alarm Horn Siren Metal Cover Guard Trim Bracket Mount 8J0951287

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Part no. A0045428720

Horn Mercedes W210 Horn Signal Fanfare Low Tone 400Hz A0045428720

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Part no. A0075425320

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

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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. 5Q0951223D

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

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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. DS7T19G229BA-1

Ford Ranger Wildtrak Mk6 Anti Theft Alarm Siren Horn Signal DS7T-19G229-BA

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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. 4H0951221B

Skoda Octavia IV Horn Signal Low Tone Pitch Fanfare 4H0951221B

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Part no. A0065429820

Mercedes W176 W246 Horn Signal Fanfare Front Left Horn Signal A0065429820

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Part no. A0075421220

Mercedes V251 Front Bumper Signal Air Horn Fanfare 420Hz Left N/S A0075421220

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Part no. 2694304-1

Ford Focus III Horn Signal Fanfare Sirene Alarm BM5T-13A803-AC BM5T-13A803-AD

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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. BM5T-13A803-AC

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

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Part no. YEB500160-1

Range Rover Sport L320 High Pitch Horn Signal Alarm 8H32-13801-AA

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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. YEB500160

Range Rover Sport L320 High Pitch Horn Signal Alarm 8H32-13801-AA

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Part no. 99663711701

Porsche Carrera 996 Horn Signal Fanfare Alarm System Unit 99663711701

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Part no. YEB500080

Range Rover Sport L320 Low Tone Horn Signal Siren Alarm YEB500080

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Part no. A2035420320-1

Mercedes CLC CL203 Horn Signal High Tone Siren Fanfare A2035420320

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Part no. 3M5T-13A803-CA

Ford Kuga Mk1 Twin Electric Horn Unit Low & High Tone 3M5T-13A803-CA

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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. A2035420420

Mercedes CL203 Horn Signal Tone Siren Fanfare Left N/S 420 Hz A2035420420

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Part no. 9657476680

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

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Part no. 1371440080

Fanfare Horn Citroen Relay Peugeot Boxer Signal Low Tone Pitch 1371440080

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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. A0065420120

Horn Signal Mercedes W211 W219 Fanfare 420Hz Horn Signal Siren A0065420120

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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. DH52-13A803-AC

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

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Part no. 8P0951221C-1

Audi A3 8P Horn Signal Low High Tone Pitch Siren Set 8P0951221C 8P0951223C

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Part no. 5Q0951221J

Audi Q2 GA Horn Signal Fanfare Alarm Low Tone Left N/S 5Q0951221J

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Part no. 7L0951223

Porsche Cayenne 9PA Horn Sound Signal Fanfare Alarm High Tone Siren 7L0951223

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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. 7410917

BMW X1 F48 X2 F39 Horn Low Pitch Tone Signal 7410917

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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. A0045427920

Mercedes-Benz CLK-Class W208 Horn Signal Fanfare High Tone 510Hz A0045427920

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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. YEB000020

Range Rover L322 High Note Horn Fanfare Alarm Signal Assembly YEB000020

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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. BM5T-13A803-AC-1

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

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Part no. 96610-4H101

Hyundai H-1 Horn Signal Low High Tone Set 96610-4H101

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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. 2694304

Ford Focus III Horn Signal Fanfare Sirene Alarm BM5T-13A803-AC BM5T-13A803-AD

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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. A0045423620

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

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Part no. 2785110

Ford Transit Mk8 Horn Signal Fanfare High Low Tone Set GK2T-13A803-AB

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Part no. M8A2-13802-AA

Range Rover Velar L560 Horn Fanfare Signal Low Tone M8A2-13802-AA

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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. AV1T-13802-AB

Ford B-Max Electric Horn Signal Fanfare Low Tone Pitch Sound AV1T-13802-AB

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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. 600951223B

Volkswagen VW Polo 9N Horn Signal Fanfare Siren 600951223B

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Part no. 4K6951210

Audi A6 C8 Horn Sound Signal Fanfare Alarm Low Tone Siren Left N/S 4K6951210

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Part no. 7217703-1

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

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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. YWK500040-1

Range Rover Sport L320 Anti Theft Alarm Siren Signal Unit YWK500040

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Part no. A0055425720-1

Horn Signal Mercedes W203 W251 Right O/S Alarm Siren High Tone A0055425720

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Part no. A0065421220-2

Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Part no. H1BT-13A803-BC

Ford Fiesta St Mk8 Double Horn Signal Low High Tone Pitch Set H1BT-13A803-BC

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Part no. M8A2-13801-AB

Land Range Rover Velar L560 Dual Note Electric Horn Front Left N/S M8A2-13801-AB

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Part no. a0075425920

Mercedes SLK R172 Horn Signal Left N/S Fanfare 500Hz A0075425920

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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. A0065421220-1

Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

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Part no. A0045427720

Mercedes W203 Horn Signal Fanfare Siren Alarm A0045427720

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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. 9682892280

Peugeot 207 Horn Sound Signal Fanfare Alarm High Tone Siren 9682892280

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Part no. BJ32-13A803-AD

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

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Part no. 8495328

Mini F60 Countryman Horn Low Pitch Tone Signal Fanfare 8495328

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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. A2135422800

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

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Part no. M8A2-13801-AA

Range Rover Velar L560 Electric Horn Signal Left N/S M8A2-13801-AA

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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. 5B72AC4

Mini F66 Alarm System Power Siren With Inclination Indicator 5B72AC4

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Part no. A0005405500-1

Horn Signal Mercedes W176 W246 W156 W117 Fanfare 400Hz Left N/S A0005405500

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Part no. A0065429820-2

Mercedes W176 W246 Horn Signal Mount Bracket Holders Set x2 A0065429820

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Part no. A0055421220

Horn Signal Mercedes W203 W209 Fanfare Low Tone Siren 400Hz A0055421220

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Part no. Q0013693V004

Smart Roadster W450 W452 Horn Signal Fanfare Q0013693V004

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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. 2T1T-13802-AG

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

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Part no. 7835734

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

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Part no. 1C0951223

Volkswagen New Bettle Horn Signal Alarm Siren High Tone 1C0951223

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Part no. 2M5V-19G229-CA-1

Ford Kuga Mk1 C394 Alarm Siren Signal Fanfare Horn Mount Bracket 2M5V-19G229-CA

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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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