This on-board system is designed for use with any high-pressure air horn that requires an on-board air system. Comes with a 3 Gallon air tank with 7 ports, a 200 PSI heavy duty compressor, pressure gauge, pressure switch, fuse, hose, fittings, thread sealant and mounting hardware. Oil-less design, moisture and Dust Resistant.Automatic reset thermal overload protector, mounting plates with vibration isolators. We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. Please allow 0.5-1 inch difference due to manual measurement. Instructions is included in this kit. We will provide help as much as possible. The compressor in this kit must be mounted upright, in a clean & dry location. Package Included: 1 x Air Tank 1 x Air Pressure Gauge 1 x Pressure Switch 1 x Safety Valve 1 x Wing Style Drain Valve 5 x Hex Head Male Plug 1 x OD Nylon Plastic Hose 1 x Fuse 1 x Thread Sealant Tape 1 x Rubber Ring 4 x Screws(Big) 4 x Screws (Small) 2 x Screws (Minimum) 4 x Nut (Big) 4 x Nut (Small) 4 x Nut (Minimum) 4 x Gaskets (Big) 8 x Gaskets (Small) 4 x Small Accessories. The item "12V 3 GAL 200 PSI Air Compressor Onboard System with 4 Trumpet Horn For Boat Truck" is in sale since Wednesday, December 25, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Interior\Steering Wheels & Horns". The seller is "mhestore2009" and is located in Shenzhen. This item can be shipped worldwide.