Check the listing for details. MerCruiser V6 One-Piece Exhaust Manifold riser Conversion 4.3 elbow kit set elbo. Condition: New. Listed at 899.00 USD. Kit to convert Mercruiser obsolete one-piece manifolds to common two piece manifolds Kit includes Two manifolds (left and right are the same)Two risers (left and right are the same)Two aluminum elbowsTwo upper rubber couplersTwo lower rubber couplersTwo block to manifolds gasketsTwo manifold to riser gasketsManifolds boltsRiser boltsStainless steel hose clampsTwo manifold hose elbows with drain plugsplugs needed for risers and manifoldsKit to convert Mercruiser obsolete one-piece manifolds to common two piece manifolds Kit includes Two manifolds (left and right are the same)Two risers (left and right are the same)Two aluminum elbowsTwo upper rubber couplersTwo lower rubber couplersTwo block to manifolds gasketsTwo manifold to riser gasketsManifolds boltsRiser boltsStainless steel hose clampsTwo manifold hose elbows with drain plugsplugs needed for risers and manifolds