(BYO) HornAir 2485 Onboard Air System

$ 489.99

Overview For those that won’t settle for anything but the best of the best, we bring you the Horn Air 2485. We outfitted our classic Horn Air kit with Viair’s biggest and baddest compressor, the 485C. When it comes to performance, accept no imitations. With other onboard air, you have to choose between a long duty cycle and a fast...

Tire Inflation Kit
Electric Drain Valve Kit


For those that won’t settle for anything but the best of the best, we bring you the Horn Air 2485. We outfitted our classic Horn Air kit with Viair’s biggest and baddest compressor, the 485C. When it comes to performance, accept no imitations. With other onboard air, you have to choose between a long duty cycle and a fast refill time. With our HornAir 2485 system, you get the best of both worlds, the longest duty cycle as well as the fastest refill of any other heavy-duty kit!

Included is our Black 2-Gallon Tank that has four 1⁄4 in ports and two 1/2 in ports. Strategic placement of the ports allows you to be able 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 inch ports provide optimal airflow, preventing bottlenecking that occurs in other kits.

The star of the show is the overpowered Viair 485C. The only Viair compressor rated at 100% duty cycle and 200 PSI, The Viair 485C can easily power our 150 PSI Horn Air kit and then some. As well as a ridiculous duty cycle, the Viair 485C also has an insane refill time, able to recharge our Horn Air 2485 kit from 110-150 PSI in only 50-55 seconds!  With a sleek new head design, not only is the Viair 485C the fastest, but also the quietest compressor available. All the increased power won’t mean increased strain on your battery either, the Horn Air 2485 delivers next-level performance while only pulling 23 amps!

An increasing number of people are using this for more than just blasting horns! With a system like the Horn Air 2485, you can also use the air supply to:

  • Adjust Tire Pressure
  • Moderate Pneumatic Use
  • Inflate Water Toys and Safety Gear
  • Supply Air to Load Leveling Bags
  • Supply Air for a Jake Brake
  • Supply Air for Differential Lockers
  • Blow up Kids Toys
  • And lots more!

While the Horn Air 2485 is a complete onboard air system that provides you with everything you need to get up and going, be sure to add on a Wireless Remote, Tire Inflation Kit, or an Electric Drain Valve kit to get the most out of one of the best onboard kits you can buy!

Our HornAir systems come complete with all necessary fittings, including a Viair 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. This takes out the guesswork and helps ensure your system is installed correctly.

All of our kits are backed by a year manufacturer's warranty as well as lifetime tech support!

      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.

      • Designed For HornBlasters Shocker Horns
      • All-inclusive Train Horn Air Solution!
      • Top-End 200 PSI Capable Compressor Perfect For Train Horns
      • Comes With Standard 1/2" Push-to-Pull Fitting
      • Complete Fitting Kit With Safety Valve & Drain Cock
      • All Standard Mounting Hardware
      Performance Data / Fill Rates
      0 2.24 12 0 70.0 12
      10 1.84 14 1.0 51.0 15
      20 1.75 16 2.0 47.0 16
      30 1.67 17 3.0 44.0 18
      40 1.61 18 4.0 41.0 20
      50 1.54 19 5.0 38.0 21
      60 1.47 20 6.0 35.0 21
      70 1.42 21 7.0 32.0 22
      80 1.36 21 8.0 29.0 22
      90 1.30 22 9.0 27.0 22
      100 1.23 22 10.0 25.0 23
      110 1.17 22 11.0 22.0 22
      120 1.11 22 12.0 21.0 21
      130 1.06 22 13.0 21.0 21
      140 1.01 23 13.8 21.0 21
      150 0.97 22      
      160 0.92 22      
      170 0.88 22      
      180 0.84 21      
      190 0.77 21      
      200 0.73 21      

      * Supply Voltage: 13.8 Volts

      0 to 150 PSI 3 min. 15 sec. (± 15 sec.)
      110 to 150 PSI 45 sec. (± 05 sec.)

      * Supply Voltage: 13.8 Volts

        • Tank: 2 Gallon Tank
        • Length: 17" (431.8 mm)
        • Diameter: 6" (152.4 mm)
        • Height: 7" (177.8 mm)
        • Weight: 10 lb (4.54 Kg)
        • Compressor: Viair 485c Platinum Air Compressor
        • Average Fill Time: 1 Min 30 Sec
        • Voltage: 12 volts DC
        • Air Flow: 2.24 CFM at Free Flow
        • Max Amperage: 23 amps
        • Maximum Duty Cycle: 100% @ 200 PSI
        • Maximum Working Pressure: 200 PSI
        • Compressor Length: 10.63″ (270 mm)
        • Compressor Width: 4.1″ (104.14 mm)
        • Compressor Height: 6.44″ (163.57 mm)
        • Pressure Switch: Weatherproof 110/150 PSI Switch
        • Voltage: 12 volts DC
        • Max Amps: 40A
        • Stop Pressure: 150 PSI
        • Restart Pressure: 110 PSI
        Diagrams / Manuals
        Refunds, Returns, & Warranty
      • 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.


        Use this product in a safe and responsible manner, at a distance of at least 100 feet from others.

        Proper hearing protection must be worn when using this air horn. Hearing loss or permanent damage may result from unsafe use.

        Never operate this product in a closed environment or close to pedestrians or others.

        It is the consumer's responsibility to comply with local noise ordinances and D.O.T. sound level laws.


        This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.


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