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The Plenum drain hose is an important part the factory Astro Ventilation system found in 1968 through 1975 C3 Corvettes. The Astro ventilation system allows fresh air to flow through the cabin of your Corvette and out through the vents located behind the rear window. Below these vents is a large plenum which needs to drain any water it collects. These reproduction plenum drain hose fits all 1968 through 1975 C3 Corvette coupes and will replace your missing or worn out original hoses. The rubber that these drain hoses are made from can become hard and brittle over the years. If they become hard and brittle a can easily crack and allow water to drain into areas of your Corvette that it should not be. This set of reproduction drain hoses will allow you to quickly and easily replace your worn out or missing hoses ensuring that your ventilation system works at its best. This hose measures: 7 inches long, 1 3/16 ID, the flange is 3 inches in diameter with 3 punched attachment holes that are 2 inches on center.
