Viair Dual Chrome 480C Onboard Air System

Honking & Heavy Duty Pneumatic Use


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A complete onboard air solution you can trust to go the extra mile, the Viair 20021 Dual 480C Onboard Air System delivers unparalleled dependability and performance. Featuring dual Viair 480C Compressors with a new and improved head design to improve CFM and heat ventilation, this complete 200 PSI onboard air solution will ensure you always can handle any pneumatic task life throws at you, able to power air locker, air tools, tires up to 40”, HornBlasters Horns and much more! The twin 480C Chrome Compressors powering the system gives you a 100% duty cycle up to 100 PSI and will recharge the included Viair 2.5-gallon tank from 165-200 PSI in only 46 seconds! 

As a complete kit, the Viair Dual 480C 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 to outfit you with everything you will need to get the most out of this kit, including an air source relocation kit, air pressure regulator, 30-foot coil hose with 200 PSI air gun with gauge, as well as a dash panel with a built-in gauge.

0 to 200 PSI 2 min. 30 sec. (± 10 sec.)
165 to 200 PSI 46 sec. (± 05 sec.)
37″ X 12.5″ FILL RATE
0 to 30 PSI 3 min. 50 sec. (± 10 sec.)
15 to 30 PSI 1 min. 55 sec. (± 05 sec.)
40″ X 15.5″ FILL RATE
0 to 30 PSI 4 min. 40 sec. (± 10 sec.)
15 to 30 PSI 2 min. 00 sec. (± 05 sec.)
  • Part Number: AS-248D
  • Manufacturer: Viair
  • MPN: 20021
  • Refill Time: 35 Seconds
  • Empty Fill Time: 2 Min 30 Sec.
  • Operating Pressure: 200 PSI
  • Restart Pressure: 165 PSI
  • Safety Valve: 235 PSI
  • Relay: 40 amps (each)
  • 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 gal (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: 2x Viair Chrome 480C Air Compressors
  • Compressor Part Number: AC-480C
  • Compressor MPN: 48032
  • Voltage: 12 volts DC
  • Max Amperage: 40 amps (20 each)
  • Max Output: 3.52 CFM (1.76 each)
  • Maximum Duty Cycle:  100% @ 100 PSI
  • Compressor Length: 11.25″ (285.75 mm) (each)
  • Compressor Width: 4.0″ (101.6 mm) (each)
  • Compressor Height: 6.75″ (171.45 mm) (each)
  • Compressor Weight: 9.75 lb (4.42 Kg) (each)
  • Pressure Switch: Viair 165/200 PSI Switch
  • Pressure Switch PN: PS-200R
  • Pressure Switch MPN: 90118
  • Pressure Switch Fitting: ⅛″ NPT male
  • 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