99745 Marine Exhaust Manifold 18-1952-1 For MerCruiser 4.3L 262 V6 99746 85-02Marine Exhaust Manifold Feature: 1.Ideal Replacement The exhaust manifold exhausts the exhaust gases produced when the boat is running into the atmosphere while reducing noise. Timely inspection and replacement of a new manifold can greatly improve your driving comfort. This is a perfect replacement that has the same quality as the original unit. 2.High quality and special Built to strict OEM quality standards, the exhaust manifold is made of high