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Cheap Mercedes-Benz B-Class Horn

Compare prices on a used Mercedes-Benz B-Class horn from UK breakers. Free part request, no obligation.

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What to check when buying a used Mercedes-Benz B-Class horn

A used horn that fits one vehicle won't always fit another - even within the same model range. These questions help breakers match stock to your exact vehicle before they quote:

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Fitment questions

Does a Mercedes B-Class horn actually exist, and can I buy one from a breaker?

Yes, every variant of the Mercedes-Benz B-Class has a horn as standard — it is a legal requirement on all road-going cars in the UK, so it was fitted across every engine, trim, and generation of the B-Class. You can source a used one from a dismantler (breaker) through Findapart by entering your registration to get quotes.

Will a horn from a W245 B-Class (2005–2011) fit a W246 B-Class (2011–2018)?

The W245 (first generation, 2005–2011) and the W246 (second generation, 2011–2018) are quite different platforms, and horn mounting points and electrical connectors may not be the same across that generation boundary. The horn itself is a simple component, but confirm with the breaker that the connector plug and bracket match your specific car before buying.

Does it matter whether my W246 B-Class is a pre-facelift or post-facelift model when buying a horn?

The W246 received a facelift in 2015, but the horn is a mechanical/electrical component tucked behind the front bumper, and its fitment is unlikely to be affected by the styling updates introduced at the facelift. That said, confirm with the breaker against your registration that the connector and mounting are compatible, as minor running changes can sometimes occur mid-cycle.

Does trim level matter — will a horn from a Sport fit my SE or AMG Line B-Class?

Trim level does not affect horn fitment on the B-Class — the horn is the same functional part regardless of whether the car is an SE, Sport, or AMG Line. There are no cosmetic differences to worry about with a horn either, so any trim-level donor car of the same generation should be a suitable match, subject to the breaker confirming compatibility.

Will a B-Class horn fit other Mercedes models, such as the A-Class or GLA?

Mercedes-Benz does use common components across its compact car family — the W176 A-Class and X156 GLA share the same platform as the W246 B-Class, so the horn unit and its connector may well interchange. However, confirm this with the breaker rather than assuming, as subtle differences in bracket design or connector type can exist between models.

My B-Class horn has stopped working — is it definitely the horn that needs replacing, or could it be something else?

Before sourcing a replacement horn, it is worth checking the fuse for the horn circuit and testing whether the horn itself receives voltage when the steering wheel button is pressed, as faults in the clock spring (the rotary connector in the steering column) are a common cause of horn failure on B-Class models. If the horn unit itself is at fault, a used one from a breaker is a cost-effective fix — give your registration to the breaker so they can pull the correct unit from a matching donor car.