Does this listing consist of 2 pieces?

Yes- 12V Low Tone Frequency: 300 Hz High Tone Frequency: 500 Hz. Also includes relay, but no wiring or additional mounting hardware. VERY loud.

Installion instruction

Actually there are Instructions.. There are so Small (tiny) its not even funny. After you open the Lid they are on top of the Flaps! English is on the Top Left Flap.. ---- I Needed to Adjust the Brackets to install the Horns on my Truck and Sadly since it CANT Be seen. It tells you NOT to adjust the Bracket it affect the electromagnetical properties and will result in loss of performance and warranty.. AND I MOVED MINE! I AM Pissed off!!! I COULDN'T SEE THIS...

Are these water resistant? Like if they are on an offroad vehicle and get submerged occasionally will they still work?

These are more the water resistant. I have used this product for several years on several viechle's including motorcycles that get ridden in the rain several months of the year and have had not breakdown do to water stopping them from working. The even have been under water for about 5 minutes and worked immediately after that and several years later were still working.

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Horn B133 Set - 2 Pieces - 12V - 118dB(A) - 300 / 500Hz - Low Tone / High Tone - Electric - Red / Black - Flat Connector incl. Relay - 3AG 003 399-801

Product ID: 53855315

Details

Brand
Hella
Colour
Red
Item dimensions L x W x H
18.6 x 17 x
Material
Metall
Voltage
12 Volts

⚡12V efficient power

🎵Dual-tone 300/500Hz frequency

🔊118dB piercing volume

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₩183018

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚗 Make your presence impossible to ignore with HELLA’s thunderous twin-tone horn!

PRECISION DUAL TONE DESIGN - Combines low (300Hz) and high (500Hz) tones for a rich, attention-grabbing alert that stands out on the road.
TRUSTED GERMAN ENGINEERING - Crafted by Hella, a global leader in automotive parts, delivering durability and performance you can rely on.
BUILT TO BRAVE THE ELEMENTS - IPX4 & IPX9K rated protection means this horn withstands rain, dust, and high-pressure cleaning without missing a beat.
COMMAND ATTENTION INSTANTLY - Unleash a powerful 118dB sound that cuts through any noise, ensuring you're heard loud and clear.
PLUG PLAY WITH CONFIDENCE - Includes flat blade connectors and relay for straightforward installation—professional fit recommended for seamless integration.

The HELLA Horn B133 Set is a robust, dual-tone 12V electric horn delivering a commanding 118dB sound at 300 and 500Hz frequencies. Designed for universal fit on passenger cars, it features durable metal construction, IPX4 and IPX9K protection for weather resistance, and comes with flat blade connectors and relay for professional installation. Engineered in Germany, this horn ensures reliable, high-performance signaling that elevates your vehicle’s safety and style.

Specifications

ASIN	B00ASK3BP8
Best Sellers Rank	63,935 in Automotive ( See Top 100 in Automotive ) 97 in Car Horns
Brand Name	Hella
Colour	Red
Compatible with Vehicle Type	Passenger Car
Country Of Origin	Germany
Customer Reviews	4.4 4.4 out of 5 stars (774)
Fit Type	Universal Fit
Global Trade Identification Number	04082300002355
Item Dimensions	18.6 x 17 x 14.1 centimetres
Item Weight	0.96 Kilograms
Manufacturer	Hella KGaA Hueck & Co.
Manufacturer Part Number	3AG 003 399-801
Material Type	Metall
Noise Level	118 Decibels
Style Name	Modern
Unit Count	1.0 count
Voltage	12 Volts

Reviews

M**Y

Great to deafen friends

Really loud really well built easy to install great value for money and functions perfectly will buy again for my next car

4.08.2025

P**L

They work great

Very loud

20.09.2025

R**.

Excellent value for money

Excellent Quick and easy to install!

4.04.2026

B**R

Car horns

Good quality horns

16.11.2025

R**S

Looks smart if views through the grill

Easy to fit with fixing bars and relay included. Not as loud as expected.

29.10.2025

R**R

Hella horns

Brilliant on my 2nd set only issue is over time they rust

26.10.2025

J**D

Damaged

Damaged upon arrival, looks to have been sold an old returned item

14.03.2026

M**I

Great sound

Good build quality The bolts done up so tight on back had to use a vice to get them undone !!!

21.11.2022

K**W

Unfortunately they do NOT fit a 2016 Dodge Grand Caravan. The seller says they do but they don’t, not without modifications.

18.05.2024

J**Z

buen producto. se ven excelentes.buen producto. se ven excelentes.

21.04.2022

A**O

Buenas bocinas de calidad,buen sonido y buen precio

8.11.2025

M**E

Instructions for a reverse siren.

24.02.2026

M**T

Véritable klaxon hella donc la qualité est présente ! Un son plus fort que l'origine (pour un montage en supprimant les klaxon d'origine et non en les rajoutant a ses derniers)

12.07.2021

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₩183018

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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