Listing is for both exhaust manifolds from a 2017 Ilmor 5000 MPI marine engine. Engine had about 500 hours before block damage. Manifolds are in great condition. Will work for both MV8 and 5000 MPI (red and blue) engines. Includes O2 sensors. Freight shipping only, these are quite heavy. These are over $3000 EACH if purchased new.