Transmission line for automobile

The utility model discloses an automobile transmission line, which comprises a transmission line body, a connector, a limit plate and a rubber positioning sucker, the connector is fixed at one end of the transmission line body, the limit plate is fixed on the outer surface of one end of the connector, movable screw rods are arranged in the edge of the limit plate at equal intervals, and the movable screw rods are movably connected with the inside of the limit plate. A manual control knob is fixed at one end of the movable screw rod, and the other end of the movable screw rod is connected with a rubber positioning sucker. When the connecting joint is connected with the threading port in the automobile, the manual control knob is manually rotated to be matched with the movable screw rod to rotate, so that the rubber positioning suction disc can be adjusted to be in contact with the peripheral surface of the threading port, suction force is generated during contact, and stable positioning connection between the