The (Small) World of Fake Horn Buttons

Fake parts are nothing new — but in recent years, they’ve become harder to spot.

by Mads – March 10th, 2023

 

What started with steering wheels has now fully reached horn buttons. And while they may seem like small details, original pieces can be surprisingly valuable — both financially and historically.

This guide breaks down the most common types of fake horn buttons and shows what to look for.

Why Fake Horn Buttons Exist

Horn buttons from brands like Momo or Petri can reach high prices — especially rare or early versions.

That makes them a target.

From complete replicas to modified originals and low-quality mass copies, the market today includes a wide range of fakes.

1. Complete Copies

These are full reproductions of original horn buttons.

They often target rare models — early Momo designs, signature helmet buttons or hard-to-find Petri pieces. Some are surprisingly well made, making them difficult to identify from the front.

The back usually tells the story:

  • uneven surfaces
  • incorrect connectors
  • missing details
Fake & legit Petri BMW horn button
Fake & legit Petri BMW horn button

When compared side by side with an original, differences become obvious — especially in build quality and finishing.

2. Modified Originals (“Half Copies”)

These are more subtle.

Original housings are used, but the visible front is replaced with a replica. At first glance, everything looks correct — but details give it away.

Watch for:

  • mismatched production dates
  • removed or altered markings
  • signs of modification (heat, sanding, etc.)

These are often the hardest to spot.

3. Cheap Copies

The easiest category to identify.

These copies make little effort to match the original construction. Differences are obvious, especially on the back:

  • incorrect contact systems
  • simplified design
  • additional screws or wires

They often feature logos that never existed in this form — including brands like Porsche, BMW or motorsport sponsors.

In many cases, these are fantasy pieces rather than actual reproductions.

Fake or legit Momo Porsche horn button?
Fake or legit Momo Porsche horn button?

What to Look For

When in doubt, check:

  • the back construction
  • connector type
  • surface quality
  • consistency with known originals

Good photos are essential. Without them, it’s often impossible to judge.

A Note on Sellers

Some sellers openly offer reproductions, others don’t.

While not all copies are intentionally misleading, the lack of transparency is a problem. The market includes listings from various regions, and quality varies significantly.

If something looks off — it usually is.

Final Thoughts

A fake is still a fake.

Even if it works, it doesn’t carry the same value — neither technically nor historically. Supporting original parts helps preserve what made these pieces special in the first place.

If you’re unsure about a horn button, take your time, compare carefully — or ask someone who knows what to look for

Not sure if a horn button is original?
Feel free to reach out — a second opinion can save time, money and frustration.

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