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Hella

Supertone Dual Horn Kit 12V 118dB

$74.37

SKU: 3AG 003 399-801

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Special Order
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Overview

The Hella Supertone Horn Kit is a 12V dual horn system designed to upgrade your vehicle's safety and audibility. It emits powerful tones at 300 Hz (low) and 500 Hz (high) with an impressive 118 dB(A) sound pressure level, ensuring you are heard. The kit includes a mounting bracket and features rugged red cases for visibility.

Each horn consumes 66W of power, totaling 132W for the pair. This upgrade transforms a standard horn sound into a powerful blast for critical moments.
Show original supplier description
The Hella Supertone Horn Kit is a 12V dual horn system engineered to significantly enhance your vehicle's safety and audibility. This powerful upgrade replaces a meek stock horn with a commanding sound, ensuring you are heard in critical situations. The kit delivers an impressive 118 decibels of warning power through two distinct frequencies: a low 300 Hz tone and a high 500 Hz tone. Each horn operates at 12 volts and has a power consumption of 66W, for a combined draw of 132W. The physical dimensions of each horn are 125 mm width, 85 mm depth, and 135 mm height. While the product description highlights its specific fitment for 2002-2017 Subaru WRX and STI models, it is also marketed as a universal application. This dual kit transforms a standard horn sound into a powerful blast, noted for its effectiveness and ability to command attention. The Hella Supertone Horn Kit comes with a manufacturer's limited warranty, providing assurance of its quality and performance.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHella
Part Number3AG 003 399-801
CategoryExterior Components
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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