The Volvo Penta hose connection elbow - 21394166 is a component of a marine engine's cooling system. It is an elbow shaped fitting designed to connect two hoses at different points in the cooling system. The fitting is made of high-quality bronze and has an internal diameter of 1.5 inches. It also has an external thread that fits a standard 1.25-inch connection. This hose connection elbow is designed to fit a wide range of Volvo Penta marine engines and is specifically designed for use in saltwater environments. It offers excellent resistance to corrosion and wear, making it a durable and reliable component for a marine engine's cooling system. The dimensions of this fitting are 3.6 x 3.5 x 1.8 inches and it weighs about 0.4 pounds. It is also easy to install and maintain, making it a popular choice among marine engine owners and technicians.