Viair Ultra Duty Onboard Air System

Honking & Moderate Pneumatic Use


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There is constant duty and then there is Ultra Duty. The overpowered Viair 20001 Ultra Duty Onboard Air System gives you a complete compressed air solution that gives you dependable performance, with a 100% duty cycle up to 100 PSI. With this kit, you can air up tires up to 37”, power air lockers, air tools, and HornBlasters train horns. The incredibly powerful Viair 480C air compressor delivers the performance you need and then some, filling the included 2.5-gallon tank from empty to full in 5 minutes and  2 seconds and recharged the kit from 165-200 PSI in just 1 minute and 30 seconds!

As a complete kit, the Viair Ultra Duty Onboard Air System includes all parts and hardware needed, including 20 feet of 20” Air Line, 165-200 PSI Pressure Switch, 40-Amp Relay, 1/4" NPT Drain Cock, 1/4" NPT Compression Fitting, 250 PSI Safety Valve and 20 feet of 12-Gauge Wire. Viair made sure you have absolutely everything you could need to get the most out of this kit, including an air source relocation kit, a 30-foot coil hose with an air gun, as well as a dash panel with a built-in gauge.

0 to 200 PSI 5 min. 02 sec. (± 10 sec.)
165 to 200 PSI 1 min. 30 sec. (± 05 sec.)
35″ X 12.5″ FILL RATE
0 to 30 PSI 6 min. 15 sec. (± 15 sec.)
15 to 30 PSI 3 min. 15 sec. (± 10 sec.)
37″ X 12.5″ FILL RATE
0 to 30 PSI 7 min. 00 sec. (± 15 sec.)
15 to 30 PSI 3 min. 40 sec. (± 10 sec.)
  • Viair 2.5 Gallon Air Tank
  • Viair 480C Chrome Air Compressor
  • Tire Inflation Gun
  • 30ft. Coil Hose
  • 1/4in NPT Quick Connect Stud (M)
  • 1/4in NPT Quick Connect Coupler (F)
  • Dash Panel Gauge with ON/OFF Switch
  • Pressure Switch (165 PSI on, 200 PSI off)
  • Reducer (1/8in NPT (F) to 1/4in NPT (M))
  • Reducer (3/8in NPT (F) to 1/4in NPT (M))
  • 1/4in NPT 250 PSI Safety Valve
  • 1/4in NPT Drain Cock
  • (3) 1/4in NPT Compression Fittings
  • 4in Strip of Continuous Grommet Material
  • 20ft. 12-Gauge Wire
  • Electrical Connections
  • Accessory-Air Line
  • Part Number: AS-248V
  • Manufacturer: Viair
  • MPN: 20001
  • Refill Time: 1 min 23 Seconds
  • Empty Fill Time: 5 Min 02 Sec.
  • Operating Pressure: 200 PSI
  • Restart Pressure: 165 PSI
  • Drain Cock: Yes
  • Safety Valve: Yes, 235 PSI
  • Relay: Yes, 40 amps
  • Air Source Kit Tank: Viair 2.5 Gallon 200 PSI 6 Port Tank
  • Tank Part Number: TA-206V4
  • Tank MPN: 91028
  • Tank Volume: 2.5 gals (9.5 L)
  • Tank Ports: 6 x ¼″ NPT
  • Tank Length: 23.50″ (596.9 mm)
  • Tank Width: 6.00″ (152.4 mm)
  • Tank Height: 7.50″ (190.5 mm)
  • Tank Weight: 11.805 lb (5.35 Kg)
  • Air Source Kit Compressor: Viair 480c Compressor
  • Compressor Part Number: AC-480
  • Compressor MPN: 48043
  • Voltage: 12 volts DC
  • Max Amperage: 23 amps 
  • Max Output: 1.86 CFM
  • Maximum Duty Cycle:  100% @ 100 PSI
  • Maximum Working Pressure: 200 PSI
  • Compressor Length: 10.87″ (276.09 mm)
  • Compressor Width: 4.2″ (106.68 mm)
  • Compressor Height: 6.75″ (171.45 mm)
  • Compressor Weight: 11.00 lb (4.99 Kg)
  • Pressure Switch: Viair 165/200 PSI Switch
  • Pressure Switch PN: PS-200R
  • Pressure Switch MPN: 90118
  • Pressure Switch Fitting: 1x ⅛″ NPT male
  • Pressure Switch Max Amps: 40 amps
  • Tire Inflation Chuck Type: Inflation Gun
  • Inflation Gun Max Press. : 200 PSI
  • Hose Length: 30 ft (9.14 m)
  • 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 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 Viair's One-Year Manufacturer's Defect Warranty!
  • Satisfaction Guarantee offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
  • Cross-Shipments will not cross-ship returned merchandise.
  • Physical Damage Policy
    Physical damage to any product purchased at 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

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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