Wolo® Philly Express Auto Horn. Give any vehicle the powerful sound of a train air horn!
The four trumpets and mounting base are metal triple chrome plated and designed smaller to fit into engine compartments that are unable to accommodate a full size train horn.
Built into the horn's base is a heavy-duty, chrome plated 12/24-volt electric solenoid valve. The Philly Express requires an on-board air system. Comes with all mounting hardware.