EMP 57-57513 MerCruiser V6/V8 Exhaust Center Riser ElbowThis EMP exhaust center riser elbow fits most MerCruiser V6/V8 applications and meets all OEM requirements.Product Features: 4" Exhaust Outlet; 7 Down Angle; Interchangeable BARR Marine; MC-210-43354; GLM; 51140; Mercury/MerCruiser; 44354A3; 807988A03; Quality Mark; T-20976; Sierra; 18-1976-2; For use with: Manifolds; 18-1952-1; 18-1953-2; 18-1957-1; Exhaust Elbow Gaskets; 18-0672; 18-0897; 18-2849-1; 18-2849-9-1;