Karcher's G 3000 OH is a compact powerhouse that generates 3000 PSI of pressure. It is equipped with a commercial grade pump designed with a brass head, prolonging the life of the Honda GC 190 engine. A great choice for homeowners seeking an attractively priced gas pressure washer with solid, reliable performance! Karcher's G 3000 OH is a compact powerhouse that generates 3000 PSI of pressure. It is equipped with a commercial grade pump designed with a brass head, prolonging the life of the Honda GC 190 engine. A great choice for homeowners seeking an attractively priced gas pressure washer with solid, reliable performance!