1. The dry joint exhaust manifold is manufactured strictly in accordance with mercruiser design standards, and the size is consistent with the original parts, without additional modification. 2. The dry joint exhaust manifold is made of high-strength cast iron and has undergone special anti-oxidation and anti-corrosion treatment to maintain stable performance under high temperature and high pressure environments. 3. The dry joint exhaust manifold is suitable for freshwater and seawater environments to avoid rust or leakage due to long-term use.