Check the listing for details. Exhaust Manifold set 4" 350 V8 5.0L 5.7L riser elbow MerCruiser 860246C 807988c. Condition: New. Listed at 725.00 USD. New aftermarket exhaust manifold and riser package for MerCruiser 5.0 (305), 5.7(350) marine gas V8 engines Fits engine years from mid 1980's to 2001 that used 4-inch outlet risers. Kit includes 2 manifolds, 2 risers, and plugs, and gaskets.Does not replace 'dry-joint' manifolds used on 2002 and newer boats Gaskets have tinged tinplate-reinforcement. These Manifold Gaskets are made from flexible graphite composite reinforced sheets laminated with stainless steel (marine grade) foils. These are NOT cheap paper gaskets! These are identical to factory parts at a fraction of the costWe are a USA owned and operated company! Below are interchange part numbers Manifold casting number 860246C RISER # 807988CMerCruiserManifold: Riser:87114, 87114A8, 87114A19, 87114A30, 860246, 860246A3 860246A7, 860246A9, 860246A10, 860246A15, 860246 C, 860246Q11 44354, 44354A3, 44354A9, 44354A10, 44354A13 807988, 807988A2, 807988A3, 807914A1New aftermarket exhaust manifold and riser package for MerCruiser 5.0 (305), 5.7(350) marine gas V8 engines Fits engine years from mid 1980's to 2001 that used 4-inch outlet risers. Kit includes 2 manifolds, 2 risers, and plugs, and gaskets.Does not replace 'dry-joint' manifolds used on 2002 and newer boats Gaskets have tinged tinplate-reinforcement. These Manifold Gaskets are made from flexible graphite composite reinforced sheets laminated with stainless steel (marine grade) foils. These are NOT cheap paper gaskets! These are identical to factory parts at a fraction of the costWe are a USA owned and operated company! Below are interchange part numbers Manifold casting number 860246C RISER # 807988CMerCruiserManifold: Riser:87114, 87114A8, 87114A19, 87114A30, 860246, 860246A3 860246A7, 860246A9, 860246A10, 860246A15, 860246 C, 860246Q11 44354, 44354A3, 44354A9, 44354A10, 44354A13 807988, 807988A2, 807988A3, 807914A1