null

Horns

Find the best semi-truck horns at 4 State Trucks. From loud air horns to reliable electric horns, we have it all. Whether you want a 150-decibel air horn to turn heads or a classic electric horn for everyday driving, you'll find the right fit. Upgrade your truck with durable, high-quality horns and ride with confidence.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Black Pedestal Mounting Bracket For Nathan K5LA AirChime Train Horn

    Black Pedestal Mounting Bracket For Nathan K5LA AirChime Train Horn

    HORNBLASTERS

    $155.99
    Nathan AirChime Pedestal Mounting BracketHornblasters Spare Tire Delete Kit will allow any customer with a spare tire mount under their vehicle (ie. truck, SUV, van, etc..) the ability of removing...
    09-051300025
    SKU:
    09-051300025
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Exterior
    $155.99
    Qty in Cart: 0
    Price:
    $155.99
    Subtotal:
  • HornBlasters 1/2 Inch Brass Electric Valve Kit For Train Horn To Onboard System Connect

    HornBlasters 1/2 Inch Brass Electric Valve Kit For Train Horn To Onboard System Connect

    HORNBLASTERS

    $168.99
    17 Foot 1/2 Inch Air Line, 20 Foot 18G Wire & High Flow 16MM Valve* High Quality Valve Kit * Includes  - Hornblasters Brass 1/2 Inch Electric Air Valve  - Horn Button  - 20 Feet Of 18 AWG Wire  - 17...
    09-051300024
    SKU:
    09-051300024
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $168.99
    Qty in Cart: 0
    Price:
    $168.99
    Subtotal:
  • HornBlasters Song Of The South Dixie 5 Trumpet Musical Horn System

    HornBlasters Song Of The South Dixie 5 Trumpet Musical Horn System

    HORNBLASTERS

    $70.99
    Musical Dixie Train Horn Plays Dukes Of Hazzard Theme* High Quality Dixie Horn * Includes  - Dixie Electric Horn  - On-Demand Mini Compressor  - Air Tubing & Mounting Hardware* Specifications  -...
    09-051300022
    SKU:
    09-051300022
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    5 Bell
    Shape Options:
    Round
    Material Options:
    Plastic/Poly
    Color:
    Black
    Product Type:
    Frame & Chassis
    $70.99
    Qty in Cart: 0
    Price:
    $70.99
    Subtotal:
  • HornBlasters Conductors Special 544 Nightmare Edition Train Horn Kit With 5 Gallon 8 Port 150 PSI Air Tank

    HornBlasters Conductors Special 544 Nightmare Edition Train Horn Kit With 5 Gallon 8 Port 150 PSI Air Tank

    HORNBLASTERS

    $1,208.99
    4 Train Horn Kit With Viair 444C Compressor & 110/150 PSI Pressure Switch* High Quality Train Horn Kit * Includes  - Shocker S4 Train Horns  - 1/2 Inch NPT Electric Solenoid Valve  - 5 Gallon Air...
    09-051300021
    SKU:
    09-051300021
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Capacity:
    5 Gallons
    Style Options:
    4 Bell
    Shape Options:
    Round
    Color:
    Black
    Product Type:
    Frame & Chassis
    $1,208.99
    Qty in Cart: 0
    Price:
    $1,208.99
    Subtotal:
  • HornBlasters Conductors Special 244 Nightmare Edition Train Horn Kit With 2 Gallon 200 PSI Air Tank

    HornBlasters Conductors Special 244 Nightmare Edition Train Horn Kit With 2 Gallon 200 PSI Air Tank

    HORNBLASTERS

    $1,082.99
    4 Train Horn Kit With Viair 110/150 PSI Pressure Switch & 444C Stealth Black Compressor* High Quality Train Horn Kit* Includes  - Shocker S4 Train Horns  - 2 Gallon Air Tank  - Viair 444C Stealth...
    09-051300019
    SKU:
    09-051300019
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Capacity:
    2 Gallon
    Style Options:
    4 Bell
    Shape Options:
    Round
    Color:
    Black
    Product Type:
    Frame & Chassis
    $1,082.99
    Qty in Cart: 0
    Price:
    $1,082.99
    Subtotal:
  • HornBlasters Conductors Special 232 Train Horn Kit - Honking W/ Light Pneumatic

    HornBlasters Conductors Special 232 Train Horn Kit - Honking W/ Light Pneumatic

    HORNBLASTERS

    $984.99
    2 Gallon 200PSI* High Quality Train Horn Kit * Includes  - Shocker S4 Train Horns  - 2 Gallon Air Tank  - Viair 325C Compressor  - Viair 110/150 With Built In Relay PSI Pressure Switch  - Remote...
    09-051300017
    SKU:
    09-051300017
    Truck Class:
    Universal
    Make:
    Universal Items
    Style Options:
    4 Bell
    Shape Options:
    Round
    Material Options:
    Plastic/Poly
    Color:
    Black
    Product Type:
    Frame & Chassis
    $984.99
    Qty in Cart: 0
    Price:
    $984.99
    Subtotal:
  • HornBlasters Conductors Special 228H Train Horn Kit With 2 Gallon 150 PSI Air Tank

    HornBlasters Conductors Special 228H Train Horn Kit With 2 Gallon 150 PSI Air Tank

    HORNBLASTERS

    $834.99
    4 Train Horn Kit With Viair 110/145 PSI Pressure Switch* High Quality Train Horn Kit * Includes  - Shocker S4 Train Horns  - Hornblasters 228H Air Source Unit  - Viair 110/145 PSI Pressure Switch  -...
    09-051300016
    SKU:
    09-051300016
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Capacity:
    2 Gallon
    Style Options:
    4 Bell
    Shape Options:
    Round
    Color:
    Black
    Product Type:
    Frame & Chassis
    $834.99
    Qty in Cart: 0
    Price:
    $834.99
    Subtotal:
  • HornBlasters Conductors Special 127H Train Horn Kit With Shocker S4 Train Horns

    HornBlasters Conductors Special 127H Train Horn Kit With Shocker S4 Train Horns

    HORNBLASTERS

    $763.99
    HK-S4-127H Train Horn Kit With 1.5 Gallon Air Supply & 90/120 PSI Pressure SwitchHigh efficiency train horn kit is made of black painted stainless steel Diaphragms that won't rust. Manifold-less...
    09-051300015
    SKU:
    09-051300015
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Style Options:
    4 Bell
    Shape Options:
    Round
    Color:
    Black
    Product Type:
    Frame & Chassis
    $763.99
    Qty in Cart: 0
    Price:
    $763.99
    Subtotal:
  • HornBlasters Bullet Chrome Air Horn Kit With 1.5 Gallon 120 PSI Non Weather-Sealed Air Supply

    HornBlasters Bullet Chrome Air Horn Kit With 1.5 Gallon 120 PSI Non Weather-Sealed Air Supply

    HORNBLASTERS

    $412.99
    11.15 X 5.7 X 6 Inch Chrome Air Horn Kit With 1.5 Gallon Air Source* High Quality Air Horn Kit* Features  - High Performance  - Beautiful Chrome Finish  - Complete With Solenoid* Includes  -...
    09-051300009
    SKU:
    09-051300009
    Truck Class:
    Universal
    Make:
    Universal Items
    Capacity:
    1 Gallon
    Style Options:
    4 Bell
    Shape Options:
    Round
    Material Options:
    Steel
    Finish Options:
    Chrome-Plated
    Product Type:
    Frame & Chassis
    $412.99
    Qty in Cart: 0
    Price:
    $412.99
    Subtotal:
  • 2 Gallon Spare Tire Delete Bracket For Train Horn

    2 Gallon Spare Tire Delete Bracket For Train Horn

    HORNBLASTERS

    $378.99
    19 X 19 X 7.5 Inch Powder-Coated Tank Delete Bracket* High Quality Spare Tire Delete Dual Tank Bracket* Features  - Powder-Coated Black Finish   - Made From 14 Gauge Steel  - Quick & Easy Install*...
    09-051300008
    SKU:
    09-051300008
    Truck Class:
    Universal
    Length Options:
    19 Inch
    Width Options:
    19 Inch
    Color:
    Black
    Material Options:
    Steel
    Make:
    Universal Items
    Capacity:
    2 Gallon
    Product Type:
    Frame & Chassis
    $378.99
    Qty in Cart: 0
    Price:
    $378.99
    Subtotal:
  • 12V Wireless Horn Activation Remote

    12V Wireless Horn Activation Remote

    HORNBLASTERS

    $46.80
    Remotely Activated Horn Control Module With Complete Wiring KitThis wireless horn activation remote lets you honk your horn from a distance of up to 100 yards, making it handy in crowded parking lots...
    09-051300006
    SKU:
    09-051300006
    Truck Class:
    Universal
    Make:
    Universal Items
    Product Type:
    Frame & Chassis
    $46.80
    Qty in Cart: 0
    Price:
    $46.80
    Subtotal:
  • HornBlasters Shocker XL Train Horn With 4 Fiberglass-Reinforced Trumpets

    HornBlasters Shocker XL Train Horn With 4 Fiberglass-Reinforced Trumpets

    HORNBLASTERS

    $452.99
    Shocker S4 Train Horn Kit Includes Mounting Hardware* High Quality Air Horn* Features  - Lightweight And Extremely Loud  - Durable Fiberglass Reinforced ABS Plastic Body  - Stainless Steel Diaphragm ...
    09-051300004
    SKU:
    09-051300004
    Truck Class:
    Universal
    Material Options:
    Plastic/Poly
    Make:
    Universal Items
    Shape Options:
    Round
    Color:
    Black
    Style Options:
    4 Bell
    Product Type:
    Frame & Chassis
    $452.99
    Qty in Cart: 0
    Price:
    $452.99
    Subtotal:
  • Nathan Airchime K5LA Train Horn With 5 Trumpets

    Nathan Airchime K5LA Train Horn With 5 Trumpets

    HORNBLASTERS

    $4,728.99
    19 X 29.75 X 9.25 Inch Aluminum Railway Locomotive Tune Train HornExperience authentic locomotive sound with the AirChime 5 trumpet train horn, known for its powerful, upbeat, and thunderous tone...
    09-051300003
    SKU:
    09-051300003
    Width Options:
    29 Inch
    Length Options:
    19 Inch
    Truck Class:
    Universal
    Material Options:
    Aluminum
    Make:
    Universal Items
    Shape Options:
    Round
    Style Options:
    5 Bell
    Product Type:
    Frame & Chassis
    Color:
    Black
    $4,728.99
    Qty in Cart: 0
    Price:
    $4,728.99
    Subtotal:
  • 12V 2-Way Normally Closed Air Horn Solenoid Valve Replaces 5030310B For International ProStar

    12V 2-Way Normally Closed Air Horn Solenoid Valve Replaces 5030310B For International ProStar

    AUTOMANN USA

    $150.99
    12V 2-Way Air Horn Solenoid Valve Fits International ProStarKeep your air horn performing at its best with this 12V 2-Way Normally Closed Air Horn Solenoid Valve for International ProStar trucks...
    07-05130022
    SKU:
    07-05130022
    Truck Class:
    Heavy Duty
    Make:
    International
    Product Type:
    Exterior
    $150.99
    Qty in Cart: 0
    Price:
    $150.99
    Subtotal:
  • Total: items /

Adding your products to cart

Dive into Our Universal Semi-Truck Horns

Want to turn heads, clear the lane, or just let folks know you're rolling through in style? Whether you're after the loudest train horn for your semi or just need a reliable air horn replacement, you’re in the right place.

The Benefits of Semi-Truck Air Horns

Let’s be real: stock horns just don’t cut it when you’re hauling 80,000 pounds across the country. Our collection of semi-truck air horns are designed for performance, with most horns blasting at 150+ decibels of bone-rattling sound. Here’s why drivers upgrade: - Safety & Awareness: Cut through road noise and get noticed in high-traffic or blind spot scenarios. - Authority: A deep, resonant train horn commands the road like nothing else. - Style & Personality: Express your attitude with musical horns, multi-tone blasts, or custom sound kits. - Fun Factor: You’ll never get tired of the reaction when you hit that horn—especially at truck shows or rest stops.

Explore Horn Options for Every Setup

From classic air horn kits to electric wiring or air line tubing for train horns and custom multi-tone setups, 4 State Trucks has everything you need to make your rig impossible to ignore. Our air horn kits are compatible with Peterbilt, Kenworth, Freightliner, Volvo, and more—so no matter your setup, we’ve got a horn that’ll fit right in. In this extensive collection, we carry heavy-duty train horns for semi-trucks with 3-, 4-, and 5-trumpet setups. We also offer air horn kits with onboard compressors, air tanks, and everything needed for installation. For budget builds or tight installs, check out our 12-volt electric train horns. Additionally, we carry air horn replacements for both classic rigs and newer models. Plus, explore our selection of musical horns and novelty tones (yes, including "La Cucaracha" and Dukes of Hazzard themes)! - Trusted by real drivers, fleet managers, and show truck pros. - Full air horn kits with easy-install guides and mounting hardware.  - Loudest train horns available—backed by top brands. - Competitive pricing and fast shipping anywhere in the U.S. - Real customer support from truckers who know their gear.

Frequently Asked Questions About Semi-Truck Horns

Will these horns fit my specific truck model and year?

Most air horns are universally compatible with semi-trucks that have existing air systems, including Peterbilt, Kenworth, Freightliner, Volvo, and Mack models from 1990 to present. The key requirement is having an air supply system (typically 100-150 PSI). Train horns and electric horns may require additional mounting brackets depending on your truck's configuration. Always check the product specifications for mounting dimensions and verify you have adequate clearance behind your grille or on your roof.

What's included in the installation kit, and what tools will I need?

Air horn kits typically include the horn(s), mounting brackets, air line fittings, and basic hardware. You'll need to supply your own air line (usually 1/4" or 3/8" DOT approved), wire for the solenoid valve, and a momentary switch if not included. Essential tools include wrenches (typically 9/16" and 3/4"), drill with bits for mounting holes, wire strippers, and thread sealant. Installation usually takes 2-4 hours depending on mounting location and whether you're adding a separate air tank.

What's the difference between chrome, powder-coated, and stainless steel finishes?

Chrome-plated horns offer the brightest shine but require regular polishing to prevent pitting and corrosion, especially in winter climates with road salt. Powder-coated finishes provide excellent durability and resist chipping but may fade slightly after 3-5 years of UV exposure. Stainless steel horns cost more upfront but maintain their appearance with minimal maintenance and won't rust, making them ideal for drivers in harsh weather conditions or those who prefer less upkeep.

How loud are these horns, and are there legal restrictions?

Train horns typically produce 150-175 decibels, while standard air horns range from 120-150 decibels. Federal regulations require commercial vehicles to have horns audible from 200 feet, but many states have specific decibel limits (usually around 110-120 dB at 50 feet). Train horns may not be street legal in some municipalities for regular use. We recommend checking your state and local regulations, as fines can range from $100-$500 for excessive noise violations.

Why do some horns sound weak or stop working after installation?

The most common cause is insufficient air supply. Horns require consistent pressure (minimum 100 PSI) and adequate air volume. Check for undersized air lines (upgrade to 3/8" if using 1/4"), air leaks at fittings, or a weak compressor. Moisture in the air system can also freeze in cold weather or corrode internal components. Installing an air dryer and draining your tanks regularly prevents most issues. If the horn sounds raspy, the diaphragm may need replacement, which is typically a $15-30 part.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!