Ignitions and Electrical› Wiring Components

Hella

Hella Sharptone Horn Kit 12V 415/350Hz Yellow (3BB922000731 = H31000001) (Min Qty 360)

$231.82

SKU: H004 H31000001

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Hella Sharptone H31000001 is a set of extremely loud, universal horns designed to get the attention of other vehicles. These horns utilize a combination of a low tone (300Hz) and a high tone (415Hz) to produce a powerful 115dB sound, geared towards highway driving. The kit includes two round horn units, one yellow and one blue, along with generic mounting brackets that may require modification for your specific application. A single horn relay is also included, though it is not needed for Volvo vehicles.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHella
Part NumberH004 H31000001

Videos

How to Wire and Install Hella Horns

How to Wire and Install Hella Horns
Hella Supertone Horn WIRING Tutorial!

Hella Supertone Horn WIRING Tutorial!
Subimods Hella Supertones vs Hella Sharptones Comparison + Sound Clip

Subimods Hella Supertones vs Hella Sharptones Comparison + Sound Clip
2021 Subaru WRX Limited Hella Supertone Horns (Before & After)

2021 Subaru WRX Limited Hella Supertone Horns (Before & After)
Hella Sharp Tone VS Super Tone

Hella Sharp Tone VS Super Tone
Hella Sharptone Install on a Subaru Outback. No splicing, cutting, drilling, or relay.

Hella Sharptone Install on a Subaru Outback. No splicing, cutting, drilling, or relay.
How to Install Hella Horns on Subaru WRX | Hella Sharptone Horn Kit W/ Perrin Bracket

How to Install Hella Horns on Subaru WRX | Hella Sharptone Horn Kit W/ Perrin Bracket
7: Hella Sharp Tone Horns on 2010 Mazda 3

7: Hella Sharp Tone Horns on 2010 Mazda 3
Tutorial: Installing Hella Supertones on a 2006 Subaru WRX STi

Tutorial: Installing Hella Supertones on a 2006 Subaru WRX STi
Installing HELLA Sharptones Horn on 2008 Pontiac Vibe / Toyota Matrix

Installing HELLA Sharptones Horn on 2008 Pontiac Vibe / Toyota Matrix

Buy with Confidence

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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