HornBlasters Flatlaw 3-Liter Train Horn Kit, All-In-One Air System - Easy Install - Big Sound
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Availability:
In Stock.
Arrives
Sunday, Feb 15
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Features
- 110 PSI Air Source - The 3-liter air source included in this kit operates at 110 PSI. The Flatlaw sounds great at 110 PSI!
- Compact Design: The reengineered configuration allows the horns to lay flat, providing more installation options without sacrificing sound quality. It's the perfect solution for those who desire the big sound of the Outlaw horn but have limited space available.
- Efficient Air Source: The included M3 3-Liter air source unit provides an ample air supply to power the train horns. With its compact size, it can fit into tight spaces while still delivering enough air for 3-4 seconds of honk time.
- Complete Kit: The Flatlaw kit comes with everything you need to get started right away. It includes a 3-liter air source unit, pre-installed high-flow valve on the horns, and all necessary components for a hassle-free installation.
- Easy Installation: The kit comes with straightforward installation instructions, making it easy for both professionals and DIY enthusiasts to set up. With a couple of hours, you'll have the Flatlaw train horn kit up and running on your vehicle.
Brand: HornBlasters
Color: Stealth Black
Material: Metal
Voltage: 12 Volts
Fit Type: Universal Fit
Brand: HornBlasters
Color: Stealth Black
Style: Classic
Noise Level: 142 Decibels
Automotive Fit Type: Universal Fit
Manufacturer: HornBlasters
UPC: 817562020823
Model: HornBlasters Flatlaw 3-Liter Train Horn Kit
Item Weight: 35.1 pounds
Package Dimensions: 22 x 21.5 x 17 inches
Item model number: HK-F3B-M3
Exterior: Black/Chrome
Manufacturer Part Number: HK-F3B-M3
Date First Available: August 19, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Feb 15
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Color: Stealth Black
I got this kit for my husband for Christmas. Needless to say he loves it and was excited to get it installed. This kit came with everything he needed to hook it up. There was no need to run to the store for extra parts. Everything mounted to his pickup exactly how he needed it to. The sound quality is amazing. LOUD!! and gives him the giggles every time he turns it on.
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Reviewed in the United States on December 30, 2025 by Kaelynn
Color: Stealth Black
GREAT, GREATEST, BEST! I LOVE THEM! I can’t say enough good about these horns. There’s no doubt that they get anyones attention no matter how loud their music is or how intense they are with their phones. Installation is pretty straightforward if you’re reasonably confident. I had issues with where I wanted to install them. I was going to install them in the sidewall of my truck bed between the outside skin and the inside wall. Ended up installing them under my toolbox with the compressor and tank on the inside. I’ll be relocating them to where my spare tire is mounted. Horn Blasters has a kit for that.
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Reviewed in the United States on November 13, 2025 by Toyodie
Color: Stealth Black
This train horn kit was easy to install and great quality. The horn is very loud.
Reviewed in the United States on October 24, 2025 by Lauren Jackson
Color: Stealth Black
The horn was reasonably priced, and it came with everything I needed to set it up, I was able to install the horn in only 2 hours with the help of online manuals, very loud, it fit perfectly to my Chevy colorodo, the quality is perfect for what I needed, it functions perfectly I’ve had it and had no problems at all, the durability is amazing, great materialsc does not feel cheap, I would reccomend it to many others!!!
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Reviewed in the United States on February 17, 2025 by Evan Hodge
Color: Stealth Black
It sounds JUST LIKE a modern train horn. It a legit attention grabber.
Reviewed in the United States on October 11, 2025 by JetnJohnson
Color: Stealth Black
Above and Beyond Impressed !
Reviewed in the United States on January 14, 2026 by Joseph underwood
Color: Stealth Black
I had two requests for Christmas, either a bull-bar (and possible felony) or a Train Horn kit (I have to constantly drive back and forth to Orlando and that I-75 corridor is HORRIBLE)...prudent choice, by wifey when she got me this kit. Had it professionally installed on my 2024 Tacoma....5k highway miles later, it still brings a smile to my face whenever the horn "has" to be utilized...for safety, of course. So incredibly loud beyond what I had ever imagined. Simply beautiful.
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Reviewed in the United States on March 31, 2025 by Shawn Comis
Color: Stealth Black
Great deal! Everything you'll need to make the installation, outside of a suitable mounting point.
Reviewed in the United States on March 23, 2025 by Stephen