Feature: 1. OE Number: The exhaust manifold is repalcement for MerCruiser 87114, 87114A8, 87114A19, 87114A30, replacement for Sierra Marine 18‑1953‑2. 2. Fitment: The exhaust manifold assembly is a replacement for MerCruiser 5.0L 5.7L 1983‑2003 V8 marine gas engines, replacement for MerCruiser 200 230 260 320 300 898. 3. Application: Does not replace newer dry joint style manifolds or older log style manifolds, center rise style design, will fit either side of the engine, and all original mounting brackets. 4. Dimensions: Riser mating bolt dimensions are 3‑7/16in (87.3mm) by 3‑1/16in (77.8mm) bolt center to center, supplied with gaskets and will fit port and starboard applications. 5. Easy Installation: Comes with gaskets, lower water fitting, mounting bolts, and all necessary plugs for easy installation. It is ideally suited for freshwater applications. Specification: Item Type: Marine Exhaust ManifoldOE Number:Replacement for MerCruiser: 87114, 87114A8, 87114A19, 87114A30, 860246, 860246A3, 860246A7, 860246A9, 860246A10, 860246A15, 860246 C, 860246Q11 Replacement for Osco Motors: 7114B2Replacement for Barr Marine: MC 1 87114Replacement for Sierra Marine: 18-1953-2Replacement for HGE: 7114Replacement for Aqua Power: 5500Replacement for GLM Products: 51230 Fitment:Replacement for MerCruiser 5.0L (305 cu. in.) and 5.7L (350 cu. in.) V8 marine gas engines (replacement for small block) 1983-2003Replacement for MerCruiser models 200, 230, 260, 320, 300, and 898Does not replace newer dry joint style manifolds or older log style manifolds. Package List: 1 x Marine Exhaust Manifold Kit (15 pcs) Note: Please double check the part number of your item, matching information is for reference only.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!