HornAir 232 Onboard Air System

Honking & Light Pnuematic Use


1 review

Suggested Addons
Add Viair Air Compressor Bracket Tooltip
The Viair Air Compressor Bracket will allow you to mount your compressor upright and is compatible with Viair Compressor models 275C-485C.
Add Tire Inflation Kit Tooltip
Our Tire Inflation Kit includes a 30' Coil Hose, Tire Inflation Gun, Air Relocation Kit, Blow Gun, & a complete Air Accessory Fitting Kit!
Add Digital Air Pressure Gauge Tooltip
Using a tank mounted sensor wired directly to your gauge, our 220-PSI rated Digital Air Pressure Gauge delivers unparalleled accuracy with microprocessor stabilized readings.
Add Cooling Fan Isolator Kit Tooltip
Isolate your Compressor, drastically cutting down on vibration, allowing your compressor to run quieter & cooler, & extending the duty cycle up you 25%!
Add Gold Extended Warranty Tooltip
1 year add-on to existing warranty. Does NOT cover accidental damage, no advanced replacement.
Click here for more information!
+See price at checkout
Add Platinum Extended Warranty Tooltip
2 year add-on to existing warranty. DOES cover accidental damage and advance replacement.
Click here for more information!
+See price at checkout

Wanting to get onboard air but aren't sure where to start? Our HornAir 232 onboard air system is the go-to onboard air kit for many customers just getting started. The HornAir 232 is a complete 150 PSI air system that includes everything you need to get onboard air for your ride.

Our HornAir 232 comes complete with all necessary fittings, including a 110/150 pressure switch with a built-in relay, safety blow-off, air gauge, and drain cock. Unlike many other onboard air systems, ours comes with 10 and 18 gauge wire, as well as a complete wiring kit including a fuse holder. 

Included is our 2-gallon 6 port air tank, which has four 1/4" ports and two 1/2" ports. Strategic placement of the ports allows you to install your drain cock on the bottom-most port on the tank for optimal draining no matter how the air tank is oriented. The 1/2” ports provide optimal airflow, preventing bottlenecking that occurs in other kits.

At the heart of our HornAir 232 is Viair's constant-duty air compressor, the Viair 380C. As a constant-duty air compressor, the Viair 380C can refill the air tank from 110 PSI to 150 PSI in just under a minute. Our HornAir 232 is perfect for light pneumatic applications such as tire inflation or load-leveling air springs. The separate tank and compressor unit is fully sealed and able to be mounted outside and exposed to the elements.

While our HornAir 232 is a complete onboard air system that provides you with everything you need to get up and going, be sure to add on a tire inflation kit and/or an electric drain valve kit to get the most out of one of the best onboard kits on the market!


- Shocker S4 Train Horns (Part number: AH-S4)
- Outlaw Series Train Horns (Part numbers: AH-O3, AH-03B, AH-O5)

     Please Note: This HornAir system is not recommended for AirChime horns. We recommend using at least a 4-gallon tank with larger-scale train horns like the P3, P5, K3, and K5; however, this kit is perfect for HornBlasters Shocker horns and Outlaw and Bandit series horns.

    0 1.58 12 0 44.7
    10 1.45 13 1.0 38.1 13
    20 1.22 14 2.0 33.3 15
    30 1.17 15 3.0 30.6 16
    40 1.09 16 4.0 29.1 17
    50 1.06 17
    5.0 27.1
    60 1.02 17
    6.0 25.3
    70 0.97 18
    7.0 24.0
    80 0.92 18
    8.0 22.4
    90 0.88 19
    9.0 21.0 23
    100 0.85 20 10.0 19.5 21
    110 0.81 21
    120 0.78 22
    130 0.74 23
    140 0.71 21
    150 0.67 20

    * Supply Voltage: 13.8 Volts

    0 to 150 PSI 2 min. 52 sec. (± 10 sec.)
    110 to 150 PSI 56 sec. (± 05 sec.)

    * Supply Voltage: 13.8 Volts

    • Designed for HornBlasters Shocker horns
    • All-inclusive onboard air solution!
    • Heavy-duty air compressor perfect For train horns & onboard air
    • Comes with a standard 1/2" push-to-pull fitting
    • Complete brass NPT fitting kit
    • All standard mounting hardware
    • Air Tank: 2-gallon 6 port air tank
    • Tank Length: 17" (431.8 mm)
    • Tank Diameter: 6" (152.4 mm)
    • Tank Height: 8" (203.2 mm)
    • Tank Weight: 10 lb (4.54 Kg)
    • Operating Pressure: 150 PSI
    • Restart Pressure: 110 PSI
    • Tank Ports: x2 1/2" NPT, x4 1/4" NPT
    • Air Compressor: Viair 380C air compressor
    • Voltage: 12 volts DC
    • Max Amperage: 23 Amps
    • Maximum Duty Cycle: 100% @ 100 PSI
    • CFM @ 0 PSI: 1.58 CFM
    • Compressor Length: 9″ (228.6 mm)
    • Compressor Width: 4″ (101.6 mm)
    • Compressor Height: 6.75″ (171.5 mm)
    • Compressor Weight: 6.95 lb (3.15 Kg)

    2-Gallon Air Tank Dimensional Drawing

    • Money-Back Guarantee/Refund Policy
      All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform HornBlasters.com of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
    • Warranty
      This product is backed by our One-Year Manufacturer's Defect Warranty!
    • HornBlasters.com Satisfaction Guarantee
      HornBlasters.com offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
    • Cross-Shipments
      HornBlasters.com will not cross-ship returned merchandise.
    • Physical Damage Policy
      Physical damage to any product purchased at HornBlasters.com will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

    Warnings & Notices

    Safety warning icon

    This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

    Customer Reviews

    5.0 Based on 1 Reviews
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    Filter Reviews:
    Rich B.
    United States United States

    Beyond expectations

    Installation was so straightforward you can’t make a mistake. The only thing that takes time is being fussy how are you want the presentation. When I finally got away from the house and blew the horn on the highway it was so sweet, such a wonderful tone, and of course.....SUPER LOUD!! This set up is something to be proud of for sure.

    HornBlasters HornAir 232 Onboard Air System ReviewHornBlasters HornAir 232 Onboard Air System ReviewHornBlasters HornAir 232 Onboard Air System Review