This is a 19-inch vent hose manufactured by Hummel. It is an electronic part with a 405 0400 code. It is designed to provide ventilation for engine compartments, battery compartments, and interior spaces of vehicles and boats. The vent hose is resistant to oils, solvents, chemicals, and water, and it is built to withstand temperatures up to 180°F (82°C). The design also helps to reduce noise and vibration levels. The hose is PVC-coated for further protection against UV radiation, ozone, and abrasion.