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Wolo (419) Bad Boy Air Horn - 12 Volt

3.9 out of 5 stars 747 customer reviews
| 42 answered questions

Price: $34.25 & FREE Shipping on orders over $49. Details
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  • Black finish
  • Patented one-piece design that requires no hoses
  • Installs easily in minutes by simply transferring the factory horn wires to the compressor
  • Mounts with one bolt included in kit
  • Produces a powerful dual tone air horn sound that is two times 2X louder than a factory horn
69 new from $32.00 1 used from $29.11
$34.25 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Wolo (419) Bad Boy Air Horn - 12 Volt
  • +
  • Wolo (HWK-1) Air Horn Wiring Kit with Horn Button Switch
  • +
  • Absolute RLS125 12-VCD Automotive Relay SPDT 30/40A
Total price: $52.08
Buy the selected items together

Product Information

Color:Black

Technical Details

Brand Wolo
Item Weight 1.6 pounds
Product Dimensions 7.2 x 3.5 x 10.8 inches
Item model number 419
Manufacturer Part Number 419
OEM Part Number 419
Voltage 12 volts

Technical Specification

Additional Information

ASIN B000F5DQWY
Customer Reviews
3.9 out of 5 stars 747 customer reviews

3.9 out of 5 stars
Best Sellers Rank #11,313 in Automotive (See top 100)
#5 in Automotive > Exterior Accessories > Horns & Accessories > Air Horns
#520 in Automotive > Replacement Parts > Lighting & Electrical > Electrical
Shipping Weight 1.6 pounds (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 7, 2004

Warranty & Support

Warranty, Parts:Parts
Product Warranty: For warranty information about this product, please click here. [PDF ]

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Important Information

Directions
English & Spanish

Product Description

Color: Black

The Wolo 419 Bad Boy is the latest in air horn technology, a patented one-piece design that requires no hoses. Installs easily in minutes by simply transferring the factory horn wires to the compressor. Mounts with one bolt included in kit. Produces a powerful dual tone air horn sound that is two times 2X louder than a factory horn. The Bad Boy, is compact in size to fit any 12-volt vehicle and will provide the vehicle owner a powerful air horn sound. They will hear you before they see you. Built with a heavy-duty maintenance free compressor that will provide years of dependable service. Instructions in English / Spanish.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Shannon Mcvey on December 16, 2007
Color: Black
This is a great horn, hands down. Makes a sound like a Mack truck, and is compact, and easy to install. Just read the instructions. All of the negative feedback thus far is from people who either have no understanding whatsoever of 12v automotive electrical systems, or did not read the simple installation instructions. It took me 20 minutes to install this horn, and I even had to run a new wire back to the place that I decided to mount the horn from the old horn's location. This horn will pay for itself a thousand times over the first time it keeps that Chevy Suburban from running you off the road at night.
It's also good for scaring animals and small children, if you happen to be into that kind of thing.
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Color: Black
this horn is sweet! The Mazda in which I installed it came with a stock horn that couldnt frighten a squirrell. Besides the small space I had to work with, installation was a piece of cake. One suggestion, make sure you have a 20-amp circuit. The first time I layed on the horn for a driver who pulled out in front of me I fried my 15 amp fuse.
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Color: Black Verified Purchase
Mounted this on my scooter to replace the "meep meep" factory horn. Wanted to scare/wake up lane-merging car drivers. Only had it a couple of weeks, so I can't vouch for it's durability yet.

What it is/does:
-Louder than what you might call a "normal" car horn. I'd say 2x louder or a little less is fair. Meets my expectations/needs for sure.
-It hurts your ears when you're next to it and I can feel the air pressure/sound waves hit my ankles near where it is mounted. So it's legit.
-Fairly instant-on, despite what another review said about a delay
-Somewhat big- the service guys had to get really creative finding a space to mount it, but they did.
-Meets my expectations for getting car's attention. For sure.
- Great value

What it isn't/doesn't do:
- Won't make you sound like a semi or huge truck. It's higher-pitched, about like a car horn. Think if a hand-held airhorn and a truck air horn had a child. It's this. Maybe leaning towards hand-held, but it doesn't sound embarassing.
- Be as loud as a semi/huge truck. Its plenty loud. A big improvement, louder and more "piercing" than a car horn. But it's not train horn. It's not going to make your ears bleed. Think about the effect you want.

Bottom Line:
- A great and affordable upgrade to a car horn or for scooters/cycles. Will get driver's attention. Maybe not if they have the stereo absolutely cranked. Plenty loud, but not an earth-shattering train horn. Won't make you sound like a Mack truck.

The End.

Update: Rode with this mounted to the underside (covered) of my scooter for an entire season (May-December). Some rain, some temperatures below 30 degrees F. Absolutely no problems to this point. Performs consistently and well in a variety of conditions.

Update: 2 years on, this horn is still working perfectly. Stored during winters.

Update: 8/20/15: Horn is still going strong.
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Color: Chrome
I bought this for my motorcycle, since the stock horn sounds like something that belongs on a child's tricycle. The toughest part of the installation is mounting it so that compression of the front struts doesn't hit the horn. I had to use two metal mounts (doubled together for strength) that came with stock horns I had lying around. Once I bent them at 90 degree angles, I was able to mount the horn using the bolt and nut that comes with the Wolo, as well as the mount bolt on the stock horn. Wiring is pretty easy and straightforward. I just re-drew the diagram so that I could read it without a magnifying glass. Keep in mind that the instructions tell you that it doesn't matter which wire on the Wolo goes to ground or the battery, but it definitely does matter. When I first tried the horn it sounded like a dying moose; but when I switched the wires around it roared to life and scared the hell out of me. You will definitely be heard out there on the road!
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Color: Black
I use this horn on several motorcycles. It is compact enough to fit well, and loud enough for its size.

Those who want a louder or lower pitch horn will have to look at a larger, more expensive horn.

However, since they have outsourced their production to China, the quality and reliability have gone down the toilet. The last one I bought was a terrible disappointment, both in quality of construction, sound and longevity.

The chrome plated model is a joke, now. Mine turned green in a couple months in a damp environment. I ride to work, so it sits out in the weather in the parking lot.

Too bad. I really like my earlier Italian ones.
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By avi on January 29, 2011
Color: Chrome Verified Purchase
I purchased this horn based on good reviews I've read here and at the Suzuki Volusia Owners website. I installed the horn without too much fuss. I found a $0.67 piece of angle steel at Home Depot, drilled out a 10mm and 8mm hole on each side, bought some metric nuts/bolts to fit, unplugged my stock horn, added a few inches of wire, hooked up the horn and bolted it on. Took all of 15 minutes and most of that was sitting around drinking coffee in the hot Arizona sun. The horn is fairly represented in that it is quite loud, easy to install, and the shipping time was super speed - got it in a day and a half from ordering. To say I'm satisfied is an understatement. I highly recommend this horn. Please make sure you do some research on installing this horn on your motorcycle. There may be some electrical issues you'll have to deal with. I didn't have a problem, but the necessary hardware is included in the package, except for wires and connectors. If you want a loud horn, this will do fine.
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