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.

More information

Make

Horn Signal Mercedes W176 W246 1 Fanfare Front Left N/S Horn Signal A0065429820

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Mercedes A CLK Class W168 C208 500Hz Horn Signal Tweeter Fanfare A0045425420

-5%

Part no. A0045425420

Mercedes A CLK Class W168 C208 500Hz Horn Signal Tweeter Fanfare A0045425420

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Horn Mercedes W205 Low Tone 420Hz Horn Signal Warning Alarm Siren A2055421420

-15%

Part no. A2055421420

Horn Mercedes W205 Low Tone 420Hz Horn Signal Warning Alarm Siren A2055421420

Promo price

PLN 142.95

PLN 121.51

Free delivery: Aug 14

If paid before 14:00

Alarm Siren Mercedes W204 W212 Anti-Theft Horn Signal A2228202926

-15%

Part no. A2228202926

Alarm Siren Mercedes W204 W212 Anti-Theft Horn Signal A2228202926

Promo price

PLN 47.95

PLN 40.76

Delivery: Aug 14

If paid before 14:00

Mercedes Sprinter W907 W910 Horn Signal Fanfare Siren A9065400076

-15%

Part no. A9075404905

Mercedes Sprinter W907 W910 Horn Signal Fanfare Siren A9065400076

Promo price

PLN 113.95

PLN 96.86

Free delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W204 W212 W218 Fanfare Low Tone Siren 400Hz A0065429220

-5%

Part no. A0065429220

Horn Signal Mercedes W204 W212 W218 Fanfare Low Tone Siren 400Hz A0065429220

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Part no. A2055421520

Mercedes W205 Horn Signal Alarm Siren High Tone 510Hz A2055421520

PLN 142.95

Free delivery: Aug 14

If paid before 14:00

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

-5%

Part no. A0065428020

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

Promo price

PLN 104.95

PLN 99.70

Free delivery: Aug 14

If paid before 14:00

Mercedes W169 W203 Low Tone Horn Signal Fanfare A2035420220

-5%

Part no. A2035420220

Mercedes W169 W203 Low Tone Horn Signal Fanfare A2035420220

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

Mercedes W176 W246 Horn Signal Fanfare Front Right O/S Horn Signal

-5%

Part no. A0065428620

Mercedes W176 W246 Horn Signal Fanfare Front Right O/S Horn Signal

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

Part no. A0065421220

Mercedes W169 W202 W203 W220 Horn Signal Fanfare A0065421220

PLN 47.95

Delivery: Aug 14

If paid before 14:00

Part no. A2075421220

Horn Signal Mercedes W204 W212 Fanfare 420Hz Horn Signal Siren A0065429420

PLN 142.95

Free delivery: Aug 14

If paid before 14:00

Mercedes A CLK Class W168 C208 400Hz Horn Signal Tweeter Fanfare A0045425320

-5%

Part no. A0045425320

Mercedes A CLK Class W168 C208 400Hz Horn Signal Tweeter Fanfare A0045425320

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14 – 17

If paid before 14:00

Horn Signal Mercedes W212 E63 AMG Fanfare Low Tone Horn Signal Siren A2215420020

-40%

Part no. A2215420020

Horn Signal Mercedes W212 E63 AMG Fanfare Low Tone Horn Signal Siren A2215420020

Promo price

PLN 208.95

PLN 125.37

Free delivery: Aug 14

If paid before 14:00

Mercedes W221 Horn Signal Alarm Siren High Pitch Tone Left N/S A0055422120

-5%

Part no. A0055422120

Mercedes W221 Horn Signal Alarm Siren High Pitch Tone Left N/S A0055422120

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

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

-5%

Part no. A0005405500

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

Promo price

PLN 142.95

PLN 135.80

Free delivery: Aug 14

If paid before 14:00

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

-15%

Part no. A0065420120

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

Promo price

PLN 123.95

PLN 105.36

Free delivery: Aug 14

If paid before 14:00

Part no. A0075427020

Mercedes W212 Front Horn Signal Fanfare 420Hz Right O/S A0075427020

PLN 94.95

Free delivery: Aug 14

If paid before 14:00

Alarm Siren Bracket Mercedes C117 W176 W246 Anti Theft Signal Mount A2465453840

-5%

Part no. A2465453840

Alarm Siren Bracket Mercedes C117 W176 W246 Anti Theft Signal Mount A2465453840

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W169 W202 W203 W220 Fanfare High Tone Pitch A0055420220

-5%

Part no. A0055420220

Horn Signal Mercedes W169 W202 W203 W220 Fanfare High Tone Pitch A0055420220

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Mercedes SLK R171 Horn Signal Fanfare High Tone Pitch Siren 510 Hz A0055422420

-5%

Part no. A0055422420

Mercedes SLK R171 Horn Signal Fanfare High Tone Pitch Siren 510 Hz A0055422420

Promo price

PLN 56.95

PLN 54.10

Delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W212 E63 AMG Fanfare High Tone Horn Signal A2215420120

-15%

Part no. A2215420120

Horn Signal Mercedes W212 E63 AMG Fanfare High Tone Horn Signal A2215420120

Promo price

PLN 170.95

PLN 145.31

Free delivery: Aug 14

If paid before 14:00

Mercedes W245 Horn High Signal Fanfare Front Left N/S 510 HZ A0055424320

-5%

Part no. A0055424320

Mercedes W245 Horn High Signal Fanfare Front Left N/S 510 HZ A0055424320

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Mercedes W204 W212 Horn Signal Fanfare High Tone 510Hz A0065425120

-5%

Part no. A0065425120

Mercedes W204 W212 Horn Signal Fanfare High Tone 510Hz A0065425120

Promo price

PLN 123.95

PLN 117.75

Free delivery: Aug 14

If paid before 14:00

Mercedes W203 Horn Signal Fanfare Siren Alarm 400Hz A0045427420

-5%

Part no. A0045427420

Mercedes W203 Horn Signal Fanfare Siren Alarm 400Hz A0045427420

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes ML W164 W169 W203 Fanfare Low Tone Siren A0055422820

-5%

Part no. A0055422820

Horn Signal Mercedes ML W164 W169 W203 Fanfare Low Tone Siren A0055422820

Promo price

PLN 66.95

PLN 63.60

Free delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W204 W212 Fanfare High Tone Siren 510Hz A0065425820

-15%

Part no. A0065425820

Horn Signal Mercedes W204 W212 Fanfare High Tone Siren 510Hz A0065425820

Promo price

PLN 75.95

PLN 64.56

Free delivery: Aug 14

If paid before 14:00

Mercedes C219 Alarm Horn Signal Fanfare A0055423820

-15%

Part no. A0055423820

Mercedes C219 Alarm Horn Signal Fanfare A0055423820

Promo price

PLN 61.95

PLN 52.66

Free delivery: Aug 14

If paid before 14:00

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

-5%

Part no. a0075425920

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

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Mercedes W207 C207 Horn Signal Fanfare 510 HZ Right A2075420120

-5%

Part no. A0065428220

Mercedes W207 C207 Horn Signal Fanfare 510 HZ Right A2075420120

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Mercedes W164 Horn Sound Signal Fanfare Alarm Left N/S A0065422520

-5%

Part no. A0065422520

Mercedes W164 Horn Sound Signal Fanfare Alarm Left N/S A0065422520

Promo price

PLN 237.95

PLN 226.05

Free delivery: Aug 14

If paid before 14:00

Mercedes W204 W212 X204 High Tone Horn Sound Signal Front Left N/S A0055425420

-15%

Part no. A0055425420

Mercedes W204 W212 X204 High Tone Horn Sound Signal Front Left N/S A0055425420

Promo price

PLN 123.95

PLN 105.36

Free delivery: Aug 14

If paid before 14:00

Mercedes CLC CL203 Horn Signal High Tone Siren Fanfare A2035420320

-5%

Part no. A2035420320

Mercedes CLC CL203 Horn Signal High Tone Siren Fanfare A2035420320

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

Part no. 2035420320

Mercedes W169 W203 Low Tone Horn Signal Fanfare 2035420320

PLN 61.95

Free delivery: Aug 14

If paid before 14:00

Part no. A0065429820-2

Mercedes W176 W246 Horn Signal Mount Bracket Holders Set x2 A0065429820

PLN 66.95

Free delivery: Aug 14

If paid before 14:00

Mercedes S211 W211 Tone Horn Signal Fanfare 510Hz Right O/S A0055426920

-5%

Part no. A0055426920

Mercedes S211 W211 Tone Horn Signal Fanfare 510Hz Right O/S A0055426920

Promo price

PLN 85.95

PLN 81.65

Free delivery: Aug 14

If paid before 14:00

Part no. A2035420420

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

PLN 61.95

Free delivery: Aug 14

If paid before 14:00

Part no. A2035420320-1

Mercedes CLC CL203 Horn Signal High Tone Siren Fanfare A2035420320

PLN 46.95

Delivery: Aug 14

If paid before 14:00

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

-5%

Part no. A0055421220

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

Promo price

PLN 42.95

PLN 40.80

Delivery: Aug 14

If paid before 14:00

Mercedes W164 Horn Signal Low Tone Pitch Fanfare Left N/S A0055425820

-15%

Part no. A0055425820

Mercedes W164 Horn Signal Low Tone Pitch Fanfare Left N/S A0055425820

Promo price

PLN 94.95

PLN 80.71

Free delivery: Aug 14

If paid before 14:00

Part no. A0055426320

Mercedes S211 W211 Front Tone Horn Signal Woofer 420Hz Left N/S A0055426320

PLN 94.95

Free delivery: Aug 14

If paid before 14:00

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

-15%

Part no. A0055425720

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

Promo price

PLN 123.95

PLN 105.36

Free delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W204 W212 Fanfare High Tone Siren Pitch A0065421620

-5%

Part no. A0065421620

Horn Signal Mercedes W204 W212 Fanfare High Tone Siren Pitch A0065421620

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W213 C238 Alarm Siren Low Tone A2135422700

-40%

Part no. A2135422700

Horn Signal Mercedes W213 C238 Alarm Siren Low Tone A2135422700

Promo price

PLN 189.95

PLN 113.97

Free delivery: Aug 14

If paid before 14:00

Mercedes CLK W209 Horn Signal Fanfare Low Tone Siren Pitch A0055428020

-5%

Part no. A0055428020

Mercedes CLK W209 Horn Signal Fanfare Low Tone Siren Pitch A0055428020

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Mercedes W204 Anti-Theft Alarm Siren Horn Signal Bracket Holder A2048705726

-15%

Part no. A2048705726-1

Mercedes W204 Anti-Theft Alarm Siren Horn Signal Bracket Holder A2048705726

Promo price

PLN 94.95

PLN 80.71

Free delivery: Aug 14

If paid before 14:00

Mercedes W221 Horn Signal Alarm Siren High Pitch Tone Right O/S A0055422020

-15%

Part no. A0055422020

Mercedes W221 Horn Signal Alarm Siren High Pitch Tone Right O/S A0055422020

Promo price

PLN 85.95

PLN 73.06

Free delivery: Aug 14

If paid before 14:00

Part no. A2075420320

Mercedes C207 Horn Signal Fanfare Low Tone Left N/S A2075420320

PLN 142.95

Free delivery: Aug 14

If paid before 14:00

Mercedes W245 Horn Sound Signal Fanfare Alarm Siren A0065421820

-5%

Part no. A0065421820

Mercedes W245 Horn Sound Signal Fanfare Alarm Siren A0065421820

Promo price

PLN 42.95

PLN 40.80

Delivery: Aug 14

If paid before 14:00

Mercedes ML W164 Horn Signal Fanfare High Tone Pitch Siren A0055422720

-5%

Part no. A0055422720

Mercedes ML W164 Horn Signal Fanfare High Tone Pitch Siren A0055422720

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

-15%

Part no. A0055425720-1

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

Promo price

PLN 142.95

PLN 121.51

Free delivery: Aug 14

If paid before 14:00

Part no. A0065421520

Mercedes W204 W212 Horn Signal Fanfare A0065421520

PLN 80.95

Free delivery: Aug 14

If paid before 14:00

Part no. A2075421820

Mercedes W207 Horn Signal Fanfare Siren Left N/S 400Hz A2075421820

PLN 94.95

Free delivery: Aug 14

If paid before 14:00

Mercedes W204 W212 Horn Signal Fanfare Low Tone 400Hz A0065423320

-5%

Part no. A0065423320

Mercedes W204 W212 Horn Signal Fanfare Low Tone 400Hz A0065423320

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Alarm Siren Mercedes W204 W207 W212 Anti-Theft Horn Signal A2048705726

-5%

Part no. A2048705726

Alarm Siren Mercedes W204 W207 W212 Anti-Theft Horn Signal A2048705726

Promo price

PLN 85.95

PLN 81.65

Free delivery: Aug 14

If paid before 14:00

Mercedes W245 Horn Low Signal Sound Fanfare Front 420 Hz A0055424220

-5%

Part no. A0055424220

Mercedes W245 Horn Low Signal Sound Fanfare Front 420 Hz A0055424220

Promo price

PLN 89.95

PLN 85.45

Free delivery: Aug 14

If paid before 14:00

Mercedes W415 Citan Horn Signal Fanfare A4155420500 256105952

-15%

Part no. A4155420500

Mercedes W415 Citan Horn Signal Fanfare A4155420500 256105952

Promo price

PLN 94.95

PLN 80.71

Free delivery: Aug 14

If paid before 14:00

Mercedes W245 Horn Signal Woofer Fanfare A0065421720

-5%

Part no. A0065421720

Mercedes W245 Horn Signal Woofer Fanfare A0065421720

Promo price

PLN 42.95

PLN 40.80

Delivery: Aug 14

If paid before 14:00

Horn Signal Mercedes W204 W212 Fanfare 420Hz Horn Signal Siren A0075427020

-15%

Part no. A0075427020-1

Horn Signal Mercedes W204 W212 Fanfare 420Hz Horn Signal Siren A0075427020

Promo price

PLN 142.95

PLN 121.51

Free delivery: Aug 14

If paid before 14:00

Mercedes-Benz A C Class W169 W203 High Tone Horn Signal Fanfare A2035420120

-5%

Part no. A2035420120

Mercedes-Benz A C Class W169 W203 High Tone Horn Signal Fanfare A2035420120

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Mercedes W245 Horn Signal Low Tone Fanfare Bosch 500Hz A0065424420

-5%

Part no. A0065424420-1

Mercedes W245 Horn Signal Low Tone Fanfare Bosch 500Hz A0065424420

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

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

-5%

Part no. A0045427920

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

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14 – 17

If paid before 14:00

Mercedes W245 Horn Signal Tweeter High Tone Fanfare Bosch 420Hz A0065422720

-5%

Part no. A0065422720-1

Mercedes W245 Horn Signal Tweeter High Tone Fanfare Bosch 420Hz A0065422720

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

Mercedes W245 420Hz Horn Signal Tweeter Fanfare A0065422720

-5%

Part no. A0065422720

Mercedes W245 420Hz Horn Signal Tweeter Fanfare A0065422720

Promo price

PLN 94.95

PLN 90.20

Free delivery: Aug 14

If paid before 14:00

Mercedes W245 500Hz Horn Signal Tweeter Fanfare A0065424420

-5%

Part no. A0065424420

Mercedes W245 500Hz Horn Signal Tweeter Fanfare A0065424420

Promo price

PLN 85.95

PLN 81.65

Free delivery: Aug 14

If paid before 14:00

Mercedes A B Class W169 W245 Horn Warning Alarm Siren Holder Cover A1695457040

-5%

Part no. A1695457040

Mercedes A B Class W169 W245 Horn Warning Alarm Siren Holder Cover A1695457040

Promo price

PLN 46.95

PLN 44.60

Delivery: Aug 14

If paid before 14:00

Mercedes-Benz C-Class W204 Horn Signal Fanfare Low Tone 420Hz A0055425320

-5%

Part no. A0055425320

Mercedes-Benz C-Class W204 Horn Signal Fanfare Low Tone 420Hz A0055425320

Promo price

PLN 80.95

PLN 76.90

Free delivery: Aug 14

If paid before 14:00

Mercedes CLK W209 Convertible Anti-Theft Alarm Bracket Mount Holder A2097500083

-5%

Part no. A2097500083

Mercedes CLK W209 Convertible Anti-Theft Alarm Bracket Mount Holder A2097500083

Promo price

PLN 75.95

PLN 72.15

Free delivery: Aug 14

If paid before 14:00

Mercedes W204 Anti-Theft Alarm Siren Horn Signal A2048203826

-5%

Part no. A2048203826

Mercedes W204 Anti-Theft Alarm Siren Horn Signal A2048203826

Promo price

PLN 61.95

PLN 58.85

Free delivery: Aug 14

If paid before 14:00

Part no. A0065427420

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

Product currently unavailable

Part no. A0045428120

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

Product currently unavailable

Part no. A0005405700

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

Product currently unavailable

Part no. A0055422520

Mercedes S211 W211 Front Horn Signal Fanfare Tone 420Hz A0055422520

Product currently unavailable

Part no. A0045429120

Mercedes-Benz E-Class S211 W211 Low Tone Horn Signal Woofer Fanfare A0045429120

Product currently unavailable

Part no. A2475403306

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

Product currently unavailable

Part no. A2218208526

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

Product currently unavailable

Part no. A2138201101

Mercedes W176 W205 W207 W213 Anti-Theft Alarm Siren Horn Signal A2138201101

Product currently unavailable

Part no. A0065420820

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

Product currently unavailable

Part no. A0055427920

Horn Signal Mercedes W204 W212 Fanfare Sound Alarm High Tone Siren A0055427920

Product currently unavailable

Part no. A0005401910

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

Product currently unavailable

Part no. A0045428720

Horn Mercedes W210 Horn Signal Fanfare Low Tone 400Hz A0045428720

Product currently unavailable

Part no. A0065429120

Mercedes R172 Horn Signal Low Tone Pitch Fanfare A0065429120

Product currently unavailable

Part no. A0075426920

Horn Signal Mercedes W204 W212 Fanfare High Tone 500Hz A0075426920

Product currently unavailable

Part no. A0045429220

Mercedes S211 W211 High Tone Horn Signal Tweeter Fanfare A0045429220

Product currently unavailable

Part no. A2475403206

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

Product currently unavailable

Mercedes W205 High Low Tone Pitch Horn Signal Alarm Siren Fanfare A2055420820

-15%

Part no. A2055420820

Mercedes W205 High Low Tone Pitch Horn Signal Alarm Siren Fanfare A2055420820

Product currently unavailable

Part no. A0048201826

Mercedes W169 Alarm Siren Trumpet Horn Signal A0048201826

Product currently unavailable

Part no. A0045428020

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

Product currently unavailable

Part no. A0065428020-1

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

Product currently unavailable

Part no. A2239005936

Mercedes CL C118 W177 Anti Theft Alarm Siren Horn Signal Fanfare A2239005936

Product currently unavailable

Part no. A0075425320

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

Product currently unavailable

Part no. A2535422200

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

Product currently unavailable

Part no. A0065427920

Mercedes R172 Horn Signal Alarm Siren High Tone Front Left N/S A0065427920

Product currently unavailable

Part no. A9065400076-1

Mercedes Sprinter W906 Horn Signal Fanfare Siren A9065400076

Product currently unavailable

Part no. A2045456740

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

Product currently unavailable

Part no. A0005428804

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

Product currently unavailable

Part no. A2535422100

Mercedes GLC C253 Horn Signal Fanfare Front Right O/S Low Tone A2535422100

Product currently unavailable

Part no. A6395400076

Mercedes W639 W903 Tone Horn Signal Fanfare A6395400076

Product currently unavailable

Part no. A0045427820

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

Product currently unavailable

Showing 1-99 of 121 products

Loud car horns for increased safety

Loud car horns boosting road safety with clear signals

Horns are essential vehicle equipment components used for acoustic signaling, increasing road safety. A properly functioning horn allows the driver to warn other road users of potential hazards and communicate in emergency situations. In the Global Parts automotive store, you will find a wide selection of used car parts, including horns, perfectly matched to brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and others.

What functions do horns perform?

Horns are essential vehicle equipment that perform key functions:

Acoustic signaling – They warn other road users of hazards, increasing safety.
Road communication – They enable informing others of the vehicle's presence in various situations.
Legal compliance – A functional horn is required by regulations in every vehicle.
Sound aesthetics – In some vehicle models, horns can offer different sound tones, emphasizing the car's character.

Construction and purpose of horns

Horns are electric sound signals mounted most often in the front part of the car, usually behind the bumper, in the front panel, or near body reinforcements. A horn typically consists of a housing, a diaphragm, a working contact, and an electrical connector, and its operation depends on proper power supply and mounting. This component works in conjunction with the steering wheel button, relay, fuse, and wiring harness. In practice, when selecting one, it is worth considering the mounting environment, such as bumpers and mounting parts.

Comparison of horn variants

Horn type	Characteristics	What to check before purchase
Single-tone	Simpler construction, single sound tone, often used in basic trim levels.	OEM number, plug type, mounting point, system voltage.
Dual-tone	A set of two signals with different sound pitches, providing a fuller and more audible sound.	Pair completeness, bracket compatibility, wiring harness, mounting location.
Model-specific	A version intended for a specific car generation, often matched by housing shape and connector.	OEM part number, interchangeable numbers, body version, pre-facelift or post-facelift.

Why is it worth taking care of horns?

A damaged horn can reduce driving safety and result in non-compliance with traffic regulations. Typical symptoms of malfunction include:

No sound – The horn does not work despite pressing the button.
Intermittent or weak sound – This may be caused by electrical system issues or damage to the horn itself.
Unusual sounds – Screeching or a distorted tone may indicate wear of the diaphragm or the horn mechanism.
Damaged mounting – This can cause vibrations or the horn to fall off. If a replacement is needed, at Global Parts you will find suitable used components that will restore full functionality to your vehicle.

Symptoms of damage and cooperating elements

The horn diaphragm is the part responsible for producing the correct tone after voltage is applied. Its wear, moisture, or corrosion of the contacts can cause a quiet signal, distorted sound, or a complete lack of response. When choosing a component such as an Audi A4 B5 horn, it is worth comparing the OEM number, mounting method, and connector type, because even within one generation, there are differences depending on the equipment version. It is also good to check the condition of surrounding brackets, mounts, and mounting parts.

How to choose the right horns?

When choosing horns, you should pay attention to several key aspects:

Vehicle model fitment – Every vehicle has specific requirements regarding horns. In Global Parts, you will find horns perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini, and others.
Horn type – Choose between single-tone, dual-tone, or specific sound tone horns.
Technical condition – Used horns should be fully functional, free from mechanical damage and corrosion.
Electrical system compatibility – Ensure that the chosen horn works with your vehicle's electrical system.

Selecting horns by OEM and car version

A model-specific horn means a part matched not only to the brand but also to the specific body version, wiring type, and mounting point. When selecting, you should check the OEM part number, interchangeable numbers, the condition of the element, and compatibility with the mounting location on the left or right side if the system uses pairs. If you are looking for a component such as a BMW F30 horn, comparing the manufacturer's markings and the mounting bracket helps avoid problems during installation. In some cars, it is also worth checking the areas where car locks and latches and other front-end elements are located.

Why is it worth choosing used horns?

Used car parts, such as used horns, are an economical solution that allows for savings while maintaining high quality. By choosing used sound system components, you gain:

Lower costs – Used horns are significantly cheaper than new ones but offer equally high quality.
Ecology – Recycling parts supports environmental protection and reduces waste.
Wide offer – In our store, you will find used horns for many car brands.

Practical tips for installation and inspection

The horn mount is a point that stabilizes the housing and dampens excessive vibrations during operation. An incorrectly set bracket or corroded contacts can cause a signal that is too weak even when the component itself remains functional. In the case of parts such as a Peugeot 307 horn, it is worth checking the completeness of the mounting plate, the condition of the connectors, and compatibility with the car's electrical harness. Diagnostics can be supplemented by checking covers and adjacent elements from the Bodywork, mounts, and accessories department, especially after body repairs. It is also worth checking out the article Crisis in the new parts market? Why used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend in 2026, which shows why original used components are a sensible choice today, also for repairs of electrical elements and body equipment.

How to take care of horns?

To ensure horns work reliably for a long time, it is worth following a few rules:

Regular inspection – Check the condition of the horn during periodic technical inspections.
Cleaning and maintenance – Remove contaminants such as dust or moisture that may interfere with the horn's operation.
Electrical system check – Ensure that wires and connectors are in good condition to prevent operational interruptions.
Replace on time – Damaged or worn horns should be replaced to ensure safety and compliance with regulations.

FAQ

Question	Answer
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.

Summary: horns in the Global Parts automotive store

Horns are essential elements of every vehicle that increase safety and comfort of use. By taking care of their technical condition, you can feel confident on the road and meet legal requirements. The Global Parts offer includes used parts matched to many car models, including brands such as Mercedes, BMW, Audi, and others. When selecting, it is worth paying attention to the condition, OEM part number, interchangeable numbers, and compatibility with the vehicle version and mounting point. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to our automotive blog.

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