A great performance upgrade for stock engines. These systems are a direct replacement for stock Mercruiser manifolds in Bravo and Alpha applications where the exhaust outlets exit through the transom in the stock location. They will also work with EMI Silent Select or other aftermarket selector systems as well as stock Merc “S” pipes. (There is an additional charge on some late model EFI systems). Complete systems come with all necessary bolts, gaskets and fittings. Standard with black Fusioncoated finish- optional finishes are available. Specify the correct accessory brackets and options when ordering. Not for use with engines equipped with High Performance camshafts! Brackets extra.