OIRAN JAPAN · SHOWROOM CATALOG
OIRAN BIG HORN
Air horn developed with Grover Products — stated output of approximately 120 dB.
- Type
- Air horn (requires on-board compressed-air supply)
- Collaboration
- Grover Products
- Sound output
- Stated output of approximately 120 dB
01 — PRODUCT
Product overview.
The OIRAN BIG HORN is a large-format air horn developed with Grover Products for heavy-duty trucks. Its stated output is approximately 120 dB.
- Air-operated: connects to the truck’s on-board compressed-air system.
- Stated output of approximately 120 dB.
- Collaboration model with Grover Products.
- Mounting and fitting guidance is available before ordering.
Confirm compressed-air supply, mounting space, hose and fitting requirements for the vehicle before installation.
Audible warning devices are regulated equipment. Verify local regulations before road use.
02 — SPECIFICATION
Verified specifications.
| Type | Air horn (requires on-board compressed-air supply) |
|---|---|
| Collaboration | Grover Products |
| Sound output | Stated output of approximately 120 dB |
03 — OFFICIAL CONFIGURATIONS
3 verified configurations.
The official active-list codes below are grouped by family or published technical attribute. Confirm current availability and vehicle fitment with a distributor.
Grover Big HornGrover collaboration air horn based on heavy emergency-vehicle equipment; approximately 622 mm long with a 153 mm flare.
Grover Big Horn3 codes
OG-01Grover Big HornOGB-01Grover Big HornOGB-02Grover Big Horn



