17.5" height x 14.5" wide x 9.5" depth The box is a complete set up for water injection. Inside the box you will find: water tank (3qt capacity), 60 psi water pump, water pressure accumulator, water filter, quick connections: water in & water out, relay and circuit braker fuse. The system comes with 25ft high pressure hose, injector nozzle, adapters, 12volt solenoid, clamps, fittings, and bracket. It is perfect to install it on the trunk. Easy to install. It will take you about 1 hour. And it is portable. PRICE: $800