Get 15% off your next order and stay up to date with new products, promotions, and everything horn related!
The Air-Zenith OB3 takes performance and durability to a new level. It builds on the success of the OB2 with stronger internal components, higher output, and better reliability. The OB3 delivers 4.5 CFM at 200 PSI with a 100% duty cycle, giving you constant, dependable airflow.
Its upgraded design includes a German-engineered wedge-locking bolt system. This prevents the internal piston and counterweight from loosening, a feature trusted in high-speed rail and subway systems. And with a 2.5-year manufacturer warranty, you can count on long-term reliability.
Installation is simple with pre-wired connections for power, ground, and trigger. The OB3 includes a 60A relay plugged into a harness that’s prewired into the compressor’s leads. This setup makes it easy to swap or replace the relay if needed. The oil-free design reduces maintenance while the weatherproof air filter and waterproof cooling fan provide extra protection in harsh conditions.
| Part Number | AC-OB3K |
| Voltage | 12 Volts DC |
| Max Amperage | 33 Amps |
| Maximum Duty Cycle | 100% @ 100 PSI |
| Maximum Pressure | 200 PSI |
| Motor | 3/4 HP |
| Leader Hose Size | 1/2" |
| CFM @ 10 PSI | 4.5 CFM |
| Length | 13″ (330.2 mm) |
| Width | 6″ (152.4 mm) |
| Height | 8.0″ (203.2 mm) |
| Weight | 16 lb (4.42 Kg) |
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 www.p65warnings.ca.gov.
