Replace freeze damaged or corroded exhaust manifolds easily with a complete installation kit For 50 years Sierra has been producing parts engineered to meet or exceed the specifications of marine engine manufacturers and has gained the confidence of engine manufacturers and boat builders to a point of supplying them with OEM parts. Boaters and technicians can be assured a Sierra part will fit right the first time and restore function to OEM specifications. Sierra manifold kits include all you will need to for a quick installation. Each manifold is an exact OEM match and is leak tested for quality assurance. Mating surfaces are CNC machined to provide the best possible seal without additional preparation. The castings are primed and painted to stand up to the marine environment. All of the gaskets, plugs and drain elbow are packaged together for quick out of the box installation. Key Features Meets or exceeds manufacturer specifications Manifold can be used on port or starboard side Complete kit includes manifold, gaskets (exhaust elbow and exhaust manifold), and drain elbow assembly Compatible with MCM/MIE GM based 305, 350, and 377 V-8s manufactured between 1983-2002 Backed by SeaStar Solutions Limited Two-Year Warranty The Sierra Engine Parts Selector In addition to exhaust manifolds, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see ourEngine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.ApplicationOEM Part NumberBarrMC-1-87114GLM51230HGE7114Mallory9-40507Marine Power0994-100MercCruiser Sterndrive860336A2, 87114A8, 87114A19, 860246A3, 860246A9, 87114A30, 860337A2, 860246A7, 860246A10, 860246A15Osco7114B2