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Mercury Marine [Updated: Apr. 10, 2026]
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Sterndrive
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Engines - Gas
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4.5L (274 CU IN) V6 Mercury
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4.5L MPI 200 Alpha/Bravo EC
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[2A530778 & Up] - Cat.# 90-8M0124043
[2A530778 & Up] - Cat.# 90-8M0124043
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Accessories
schematic
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Cylinder Block, Camshaft, Crankshaft, and Balanceshaft
schematic
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Cylinder Head and Rocker Cover
schematic
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Electrical Components Bracket and Propulsion Control Module
schematic
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Electrical Components Starter, Alternator, and Coil Bracket
schematic
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Engine Mounts
schematic
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Exhaust Manifold and Elbow
schematic
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Exhaust System Components
schematic
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Flywheel and Coupler
schematic
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Fresh Water Cooling Cooling Hoses
schematic
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Fresh Water Cooling Crossover Assembly
schematic
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Fresh Water Cooling Heat Exchanger
schematic
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Fresh Water Cooling Sea Pump Hoses
schematic
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Front Cover and Circulating Pump
schematic
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Fuel Supply Module 2A575398 and Below
schematic
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Fuel Supply Module 2A575399 thru 2A920728
schematic
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Fuel Supply Module Components 8M0235171 - 2A920729 and Up
schematic
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Fuel Supply Module and Rail
schematic
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Harnesses
schematic
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Intake Manifold Assembly
schematic
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Jackshaft Components
schematic
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Maintenance Kits
schematic
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Mercathode Kit
schematic
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Oil Fill Tube
schematic
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Oil Pan and Pump
schematic
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Overhaul Gasket Set 4.5L
schematic
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Pistons and Connecting Rods
schematic
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Poppet Valve Assemblies
schematic
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Raw Water Cooling (Bravo) Sea Pump Hoses
schematic
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Raw Water Cooling Cooling Hoses
schematic
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Raw Water Cooling Crossover Assembly
schematic
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Remote Oil Fresh Water Cooling
schematic
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Remote Oil Raw Water Cooling
schematic
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Sea Water Pump Closed Cooling and Bravo Standard Cooling
schematic
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Service and Support Material
schematic
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Shift Bracket Alpha
schematic
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Shift Bracket Bravo
schematic
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Shift Bracket Digital Throttle and Shift
schematic
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Steering System and Drive Lube Bottle
schematic
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Top and Front Covers
schematic
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Trim Pump Assembly
schematic
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Trim Pump and Motor Components
schematic
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Water Distribution Housing Air Actuated Drain
schematic
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Water Distribution Housing Rod Actuated
schematic