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Mercury
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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 250 Alpha/Bravo
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[2A441953 THRU 2A530777] - Cat.# 90-8M0095754
[2A441953 THRU 2A530777] - Cat.# 90-8M0095754
Name
Type
Accessories
Schematic
Cylinder Block, Camshaft, Crankshaft, and Balanceshaft
Schematic
Cylinder Head and Rocker Cover
Schematic
Electrical Components Bracket and Propulsion Control Module
Schematic
Electrical Components Starter, Alternator, and Coil Bracket
Schematic
Engine Mounts
Schematic
Exhaust Manifold and Elbow
Schematic
Exhaust System Components
Schematic
Flywheel and Coupler
Schematic
Fresh Water Cooling Cooling Hoses
Schematic
Fresh Water Cooling Crossover Assembly
Schematic
Fresh Water Cooling Heat Exchanger
Schematic
Fresh Water Cooling Sea Pump Hoses
Schematic
Front Cover and Circulating Pump
Schematic
Fuel Supply Module
Schematic
Fuel Supply Module and Rail
Schematic
Harnesses
Schematic
Intake Manifold Assembly
Schematic
Jackshaft Components
Schematic
Maintenance Kits
Schematic
Mercathode Kit
Schematic
Oil Fill Tube
Schematic
Oil Pan and Pump
Schematic
Pistons and Connecting Rods
Schematic
Poppet Valve Assemblies
Schematic
Raw Water Cooling (Bravo) Sea Pump Hoses
Schematic
Raw Water Cooling Cooling Hoses
Schematic
Raw Water Cooling Crossover Assembly
Schematic
Remote Oil Fresh Water Cooling
Schematic
Remote Oil Raw Water Cooling
Schematic
Sea Water Pump Closed Cooling and Bravo Standard Cooling
Schematic
Service and Support Material
Schematic
Shift Bracket Alpha
Schematic
Shift Bracket Bravo
Schematic
Shift Bracket Digital Throttle and Shift
Schematic
Steering System and Drive Lube Bottle
Schematic
Top and Front Covers
Schematic
Trim Pump Assembly
Schematic
Trim Pump and Motor Components
Schematic
Water Distribution Housing Air Actuated Drain
Schematic
Water Distribution Housing Rod Actuated
Schematic