Check the listing for details. Indmar Barr Marine Power V8 Exhaust Riser elbow 10 Degree 3" 0992-000 20-0082. Condition: New. Listed at 139.99 USD. New exhaust riser elbow for Ford and GM/Chevrolet V8 marine gas engines. Riser has 3″ OD, 10° down-angle outlet. This is a direct replacement for many center-rise Barr, Indmar, Mastercraft, and Marine Power exhaust risers, and is compatible with any of these Indmar manifolds. Compare your casting numbers to the cross-reference below. This riser comes with gasket and bolts. It will fit either side of the engine. Each purchase is for one riser.Riser mating bolt dimensions are 4″ (101.6mm) by 2-5/8″ (66.7mm) bolt center-to-center.This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:Cross ReferencePart NumberMarine Power0992-000Osco Motors992Barr Marine20-0082Sierra Marine18-1999Aqua Power5705GLM Products56110New exhaust riser elbow for Ford and GM/Chevrolet V8 marine gas engines. Riser has 3″ OD, 10° down-angle outlet. This is a direct replacement for many center-rise Barr, Indmar, Mastercraft, and Marine Power exhaust risers, and is compatible with any of these Indmar manifolds. Compare your casting numbers to the cross-reference below. This riser comes with gasket and bolts. It will fit either side of the engine. Each purchase is for one riser.Riser mating bolt dimensions are 4″ (101.6mm) by 2-5/8″ (66.7mm) bolt center-to-center.This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:Cross ReferencePart NumberMarine Power0992-000Osco Motors992Barr Marine20-0082Sierra Marine18-1999Aqua Power5705GLM Products56110