This Detroit Diesel Keel Cool Pipe Tube is a high-quality part that is made to fit Series 149 engines. It is compatible with marine equipment and is designed to provide optimal coolant flow. The 2 1/2 hose size is perfect for a variety of applications. The part is made by Detroit Diesel, a trusted brand in the industry. It is an open box item that has never been used. This Keel Cool Pipe Tube is an essential part for any marine equipment that uses a Detroit Diesel Series 149 engine. New old stock, tarnished brass or bronze pipe with some minor scratches and dings, but otherwise in excellent condition.