Viair Quarter Duty Onboard Air System

Honking & Light Pneumatic Use


Suggested Addons
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

The Viair Quarter Duty Onboard Air System is a compact, cost-efficient system that is great for load leveling, air lockers, and more importantly, powering HornBlasters air horns! This 25% duty cycle onboard air system will provide enough service time to operate for about 10 minutes of continued use every 30 minutes. Viair’s quick-fill 275C air compressor will fill their 2-gallon 6-port air tank from empty to full in only 2 minutes and 22 seconds and will recharge the tank automatically from 90-120 PSI in only 46 seconds!   

As a complete kit, the Viair quarter duty onboard air system includes all parts and hardware needed, including 20 feet of 1/4” Air Line, 90-120 PSI Pressure Switch, 40-Amp Relay, 1/4" NPT Drain Cock, 1/4" NPT Compression Fitting,145 PSI Safety Valve and 20 feet of 12-Gauge Wire.

0 to 120 PSI 2 min. 22 sec. (± 10 sec.)
90 to 120 PSI 46 sec. (± 05 sec.)
  • Viair 2.0 Gallon Air Tank
  • Viair 275C Air Compressor
  • Accessory-Air Line
  • Pressure Switch (90 PSI on, 120 PSI off)
  • 40 - Amp Relay
  • 1/4in NPT Drain Cock
  • 1/4in NPT Compression Fitting
  • 145 PSI Safety Valve
  • 20-ft. 12 Gauge Wire
  • Inline Fuse Holder
  • Electrical Connections
  • Manufacturer: Viair
  • MPN: 10002
  • Refill Time: 44 Seconds
  • Empty Fill Time: 2 Min. 53 Sec.
  • Operating Pressure: 120 PSI
  • Restart Pressure: 90 PSI
  • Drain Cock: Yes
  • Safety Valve: Yes, 145 PSI
  • Relay: Yes, 40 amps
  • Tank: Viair 2.0 Gallon 150 PSI 6 Port Tank
  • Volume: 2.0 gal (7.6 L)
  • Ports: 6x ¼″ NPT
  • Tank Length: 19.00″ (482.6 mm)
  • Tank Width: 6.00″ (152.4 mm)
  • Tank Height: 7.50″ (190.5 mm)
  • Tank Weight: 9.645 lb (4.37 Kg)
  • Air Source Kit Compressor: Viair 275 Air Compressor
  • Max Amperage: 18 amps
  • Max Output: 2.03 CFM
  • Maximum Duty Cycle: 25% @ 100 PSI
  • Maximum Working Pressure: 150 PSI
  • Compressor Length: 6.50″ (165.1 mm)
  • Compressor Width: 3.50″ (88.9 mm)
  • Compressor Height: 4.50″ (114.3 mm)
  • Compressor Weight: 5.10 lb (2.31 mm)
  • Pressure Switch: Viair 90/120 PSI Switch
  • Pressure Switch Fitting: 1x ⅛″ 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