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Porsche > 356 (1950-1965) > Electrical & Relays >

Electric Horn

Electric Horn

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DISPLAYING 1 to 5 (of 5 products)
Air / Electric Horn 12V 420Hz and 500Hz - 0986AH0503
4
Air / Electric Horn 12V 420Hz and 500Hz
0986AH0503
Product Information
Product Information
BOSCH 0 986 AH0 503 Air / Electric Horn
12V, Holder may need adaptation.

Sold as a pair 420Hz +500Hz

bosch


Length: 92 mm
Bore Ø : 8,7 mm
Operating Mode: Electric-pneumatic
Voltage: 12 V
Rated Voltage: 12 V
Power Consumption: 60 W
Frequency Range: 420 Hz
Width: 57 mm
Height: 124 mm
Connector / Clamp: Connector may need adjustment



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

0986AH0503
0986AH0503

The product you are viewing cross references to these numbers
Horn contact retainer bracket. Porsche 356 Pre-A / 356A - 64434770500 - PP157HC, P157HC
2
Horn contact retainer bracket. Porsche 356 Pre-A / 356A
64434770500/1
Product Information
Product Information
Horn contact retainer bracket. 
Sold each - 2 required per car

Fits:
Porsche 356 Pre-A - 1950 to 1955
Porsche 356A - 1955 to 1959


Horn Contact Retainer on Steering Column.

Diagram ref no 11



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64434770500
64434770500

The product you are viewing cross references to these numbers
Horn mounting bracket. Porsche 356 Pre-A 1952-55 - PP130H, P130H
1
Horn mounting bracket. Porsche 356 Pre-A 1952-55
64463515100/2
Product Information
Product Information
Horn mounting bracket - fits left or right hand side
Sold each - 2 required per car

Fits:
Porsche 356 Pre-A - 1952 to 1955
Horn Set, 12 Volt in Chrome Porsche 356 / 911 / 912 Set of 2 - 9001000, 64463511111, 64463511200, 64463511300, 64463511400
2
Horn Set, 12 Volt in Chrome Porsche 356 / 911 / 912 Set of 2
64463511000
Product Information
Product Information
Horn Set, 12 Volt In Chrome.
Restore the distinctive sound and period-correct appearance of your classic Porsche with this OE Match 12 Volt Chrome Horn Set, manufactured as a direct replacement. Produced to OE-style specifications, this matched pair of chrome horns delivers a clear, reliable warning signal while maintaining the authentic factory look of the vehicle.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 356 1950-55
  • Porsche 356A 1955-59
  • Porsche 356B 1959-63
  • Porsche 356C 1963-65  

Mounted at the front of the vehicle, the horn set is an essential safety component, allowing the driver to warn other road users and pedestrians of their presence. Over time, original horns can suffer from internal corrosion, moisture ingress, worn electrical contacts, or damaged housings, resulting in weak, intermittent, or failed operation. This OE Match replacement set restores dependable performance and original styling, making it ideal for maintenance and concours-quality restoration projects.  

What This Product Does:
  • Produces a loud and clear audible warning signal.
  • Helps alert other road users and pedestrians.
  • Operates on the vehicle's 12-volt electrical system.
  • Restores reliable horn performance.
  • Maintains the original factory appearance with a chrome finish.
  • Provides direct OE-style fitment.
  • Replaces worn, damaged, or non-functioning original horns.

Symptoms Of Wear Or Failure:
  • Horn not sounding when activated.
  • Weak or muffled horn tone.
  • Intermittent horn operation.
  • Distorted or incorrect horn sound.
  • Corrosion on the horn housing or terminals.
  • Moisture ingress affecting performance.
  • Damaged or dented horn housings.
  • Loose or broken mounting brackets.
  • Electrical terminals showing signs of corrosion.
  • Failed MOT or roadworthiness inspection due to an inoperative horn.

Why Replacement Matters:

  • A fully functioning horn is an essential safety feature that enables you to warn other road users of potential hazards. A weak, intermittent, or failed horn can reduce your ability to react effectively in emergency situations and may also result in your vehicle failing a roadworthiness inspection.
  • Replacing worn or faulty horns restores a clear, dependable warning signal while preserving the authentic appearance of your classic Porsche. Manufactured to OE-style specifications, this chrome horn set offers the correct fit, reliable performance, and factory-style finish, making it an ideal choice for routine maintenance or high-quality restoration.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64463511000
9001000
64463511111
64463511200
64463511300
64463511400

The product you are viewing cross references to these numbers
Horn support bracket. Porsche 356 / 356A - 64463515100, 64463515200 - PRS62A, PRS62B
3
Horn support bracket. Porsche 356 / 356A
64463515
Product Information
Product Information
Horn support bracket. 

Fits:
Porsche 356
Porsche 356A

Finished in stove enamelled gloss black

Diagram ref no 23



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

64463515
64463515100
64463515200

The product you are viewing cross references to these numbers
DISPLAYING 1 to 5 (of 5 products)
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About Electric Horn

Electric horns are an essential safety feature in every Porsche, designed to alert other drivers and pedestrians in critical moments. Operating through an electric diaphragm mechanism, the horn produces a loud, distinctive tone that ensures your presence is noticed - whether in city traffic or on open roads.

At Design911, we supply a full range of genuine Porsche electric horns and high-quality aftermarket replacements suitable for classic and modern models, including the 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each horn is designed to meet or exceed OEM standards, ensuring reliability, proper sound frequency, and long-lasting performance.

What Do Electric Horns Do?
An electric horn works by using an electromagnet to vibrate a metal diaphragm rapidly, creating the familiar honking sound. It’s a crucial part of your Porsche’s safety system, allowing the driver to:

  • Warn others of hazards or potential collisions.
  • Signal presence in tight driving conditions.
  • Meet road safety and MOT regulations.

Porsche horns are tuned for specific sound tones - often dual-tone setups for a distinctive, refined Porsche character.

Why Do Electric Horns Fail?
Like any electrical component, horns can wear out or fail over time due to exposure and usage. Common failure causes include:

  • Corrosion: Moisture and road debris cause rust inside the horn or on electrical contacts.
  • Wiring faults: Damaged wires or poor grounding interrupt the circuit.
  • Relay or switch failure: The horn button or relay may no longer send the activation signal.
  • Internal wear: The diaphragm or electromagnet can weaken, resulting in a muted or silent horn.

Signs of failure include weak or distorted sound, intermittent operation, or total silence when the horn button is pressed.

Why Replace Faulty Electric Horns?
A malfunctioning horn is a serious safety concern — and often an MOT failure point. Replacing a damaged or weak horn ensures:

Full compliance with safety regulations. Clear, effective signalling to other drivers. Restored factory sound tone and responsiveness. Prevention of electrical strain on switches or relays. At Design911, we stock both genuine Porsche horns for factory authenticity and aftermarket alternatives that deliver equivalent performance at a more affordable price. Each replacement is engineered for direct fitment, durability, and long service life.
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