Hella Twin Trumpet 12V Horn Kit — Red, Dual-Tone 110 dB High/Low (500/400 Hz)

HELLA 007424801 is a universal 12V twin trumpet horn kit that delivers a sharp, attention-grabbing dual-tone sound (500 Hz high, 400 Hz low) with 110 dB output and all mounting hardware included.

Designed and manufactured with German engineering standards, this HELLA twin trumpet horn kit combines durable construction with a focused acoustic profile to improve audible presence in traffic or off-road situations. The kit includes a high-tone and low-tone trumpet, relay, mounting brackets, and clear installation instructions so it can be fitted on most light and commercial vehicles using the supplied M8 screw bracket and 6.3 mm blade connectors.

How loud and distinct is the sound?

The pair produces a concentrated warning signal measured at 110 dB(A), using a complementary high tone at 500 Hz and low tone at 400 Hz for a layered, penetrating sound. That frequency pairing helps the horn cut through ambient noise without sounding muddled.

• Sound level: 110 dB(A)
• High tone frequency: 500 Hz
• Low tone frequency: 400 Hz
• Dual-tone design enhances noticeability in traffic

What hardware and electrical specs are included?

The kit provides everything necessary for a straightforward universal installation: two trumpet horns (high and low), a relay, two mounting brackets, and mounting instructions. Electrical requirements are 12 volts and approximately 6 amps; connections use 6.3 mm flat blade terminals.

• Voltage/amperage: 12 V / 6 A
• Included relay for safe switching and longevity
• Flat 6.3 mm blade electrical connectors for common compatibility
• M8 screw horn bracket for secure mounting

How durable and vehicle-compatible is the HELLA horn kit?

Built with long-lasting materials and engineered to HELLA’s quality standards, these trumpets are suitable for both light passenger cars and commercial vehicles, plus many off-road uses. The compact footprint and included brackets make it simple to adapt to different mounting points.

• Original equipment quality from a long-established automotive supplier
• Compact dimensions: about 5.00" high × 4.30" wide × 3.2" diameter with bracket
• Corrosion-resistant finishes and robust construction
• Meets typical ECE and OE application requirements

Who is this for? Drivers, fleet operators, and vehicle enthusiasts who want a reliable, powerful horn that stands out acoustically without complex installation. If you need an aftermarket horn that balances German engineering, universal fitment, and strong audible performance for city, highway, or off-road use, the HELLA 007424801 twin trumpet kit is tailored to those needs.