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Porsche 991 (911) MK1 2012-2016 Electrical & Relays

Electric Horn

Electric Horn

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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


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Related, superseded, cross reference or alternative numbers for comparison.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
Electric Fanfare Horn, High and Low Pitched. Porsche 991 / 981 Boxster / 981C Cayman - 99163516001, 99163516000, 99163515001, 99163514901, 99163515900, 99163515901
3
Electric Fanfare Horn, High and Low Pitched. Porsche 991 / 981 Boxster / 981C Cayman
9916351
Product Information
Product Information

OE Match electric fanfare horn options for Porsche 991, 981 Boxster and 981C Cayman, covering high- and low-pitched versions with mounting support. Match the required tone and reference before selecting a replacement.

Fits

Porsche 991 2012-16
Porsche 991 Turbo 2014-16
Porsche 981 Boxster 2012-16
Porsche 981C Cayman 2014-16

Check fitment for your specific vehicle (model, year, engine) before ordering.

What This Product Does

The horn turns electrical activation into an audible warning. High and low tones are distinct versions, so identify which component needs attention rather than choosing by appearance alone.

Functions

  • Provides an audible signal when activated by the driver.
  • Replaces the corresponding high- or low-tone fanfare component.

Technical Details

  • High-pitched reference: 99163515901.
  • Low-pitched reference: 99163516001.
  • The 981 Boxster diagram additionally records high-pitched reference 99163514901.
  • Adapter cable reference: 99161294700. Please note: you may also require cable adaptor part number 99161294700.
  • The 991.2 Carrera diagram specifies a securing element with both tone versions.

Symptoms of Fault

A silent horn, an unusually faint or rough tone, or inconsistent response warrants investigation. Inspect terminal condition and the electrical supply before attributing the problem to the horn itself.

Why Replacement Matters

Renewing a confirmed defective horn addresses a missing or degraded audible warning. Checking the wiring, connections and activation circuit first helps avoid replacing a serviceable component.

FAQs

Which tone should I select?
Compare the original reference with the high- and low-pitched references above.

Is an adapter needed?
Several supplied diagrams specify cable 99161294700 alongside these horns. Confirm the connection arrangement on your vehicle before fitting.




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

9916351
99163516001
99163516000
99163515001
99163514901
99163515900
99163515901

The product you are viewing cross references to these numbers
Horn / Fanfare electric high and low pitched. Porsche 991 / 981 Boxster / 981C Cayman - 99163516001, 99163516000, 99163515001, 99163514901, 99163515900, 99163515901
3
Horn / Fanfare electric high and low pitched. Porsche 991 / 981 Boxster / 981C Cayman
Special Order item
9916351
Product Information
Product Information
Horn / Fanfare High and Low Pitched with support.

Fits:
Porsche 991 2012-16
Porsche 991 Turbo 2014-16
Porsche 981 Boxster 2012-16
Porsche 981C Cayman 2014-16

Please note: you may also require cable adaptor part number 99161294700

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

9916351
99163516001
99163516000
99163515001
99163514901
99163515900
99163515901

The product you are viewing cross references to these numbers
Wire set alarm horn conversion kit .Porsche 987 / 981 / 718 / 997 / 991 / 955 / 957 / 958 / 95B - 9P1998003A
1
Wire set alarm horn conversion kit .Porsche 987 / 981 / 718 / 997 / 991 / 955 / 957 / 958 / 95B
Special Order item
9P1998003A
Product Information
Product Information
Wire set alarm horn conversion kit .

Fits:

Porsche 987 Boxster / Cayman - 2005 to 2012
Porsche 981 Boxster / Cayman - 2012 to 2016
Porsche 718 Boxster / Cayman - 2017 to 2024
Porsche 997.1 / 997.2 - 2005 to 2012
Porsche 991.1 / 991 .2 - 2012 to 2019
Porsche 955 / 957 Cayenne - 2003 to 2010
Porsche 958 Cayenne - 2010 to 2017
Porsche 95B.1 Macan - 2014 to 2018



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

9P1998003A
9P1998003A

The product you are viewing cross references to these numbers
DISPLAYING 1 to 4 (of 4 products)
Also found on these pages
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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