Viair Medium Duty Onboard Air System

Honking & Light Pneumatic Use


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The Viair Medium Duty Onboard Air System is a complete onboard air kit that is great for moderate pneumatic uses. With the included Air Source Relocation Kit and Dash Panel Gauge with On/Off Switch, the Viair 10003 onboard air system is ready to go for light tire inflation and load leveling airbags. The included Viair 325C air compressor will fill up the Viair 2.5-gallon 6-port tank from empty to full in 4 minutes and 15 seconds and will recharge the system automatically from 110-150 PSI in only 1 minute and 25 seconds. 

As a complete kit, the Viair Medium Duty Onboard Air System includes all parts and hardware needed, including 20 feet of 1/4" Air Line, 1/4" NPT Quick Connect Coupler, Dash Panel Gauge with ON/OFF Switch, 110-145 Pressure Switch with Relay, 1/8" NPT Female to 1/4" NPT Male Reducer,  1/8" NPT Female to 1/4" NPT Male Fitting, 1/4" NPT 175 PSI Safety Valve, 1/4" Drain Cock, 1/4" NPT Compression Fittings, 4-inch Strip of Continuous Grommet Material and 20 feet of 12-Gauge Wire with Inline Fuse Holder.

0 to 145 PSI 4 min. 15 sec. (± 10 sec.)
110 to 145 PSI 1 min. 25 sec. (± 05 sec.)
31″ X 10.5″ FILL RATE
0 to 30 PSI 4 min. 40 sec. (± 10 sec.)
15 to 30 PSI 2 min. 30 sec. (± 05 sec.)
33″ X 12.5″ FILL RATE
0 to 30 PSI 6 min. 40 sec. (± 15 sec.)
15 to 30 PSI 3 min. 20 sec. (± 10 sec.)
  • Manufacturer ViairAir System
  • MPN: 10003
  • Refill Time: 1 Minute
  • Empty Fill Time: 3 Min. 25 Sec.
  • Operating Pressure: 150 PSI
  • Restart Pressure: 110 PSI
  • Drain Cock: Yes
  • Safety Valve: Yes, 175 PSI
  • Relay: Yes, 40 amps
  • Gauge: Yes, 160 PSI
  • Tank: Viair 2.5 Gallon 150 PSI 6 Port Tank
  • Volume: 2.5 gal (9.5 L)
  • Ports: 6 1/4" NPT
  • Tank Length: 23.50" (596.9 mm)
  • Tank Width: 6.00" (152.4 mm)
  • Tank Height: 7.50" (190.5 mm)
  • Tank Weight: 11.925 lb (5.41 Kg)
  • Compressor: Viair 325 Air Compressor
  • Max Amperage: 21 amps
  • Max Output: 1.77 CFM
  • Maximum Duty Cycle: 33% @ 100 PSI
  • Compressor Length: 8.00" (203.2 mm)
  • Compressor Width: 4.00" (101.6 mm)
  • Compressor Height: 7.05" (179.07 mm)
  • Compressor Weight: 6.95 lb (176.53 mm)
  • Pressure Switch: Viair 110/150 PSI Switch
  • Pressure Switch Fitting: 1/8" NPT male
  • 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

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