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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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7.4L (454 CU IN) V8 GM
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420 GM 454 V-8
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1987-1989 [0A398941 THRU 0B622418] - USA - Cat.# 90-16286
1987-1989 [0A398941 THRU 0B622418] - USA - Cat.# 90-16286
Name
Type
Alternator (Mando # AC-155603)
Schematic
Alternator (Mando # AR-150)
Schematic
Alternator (Motorola # 8MR2039K)
Schematic
Alternator (Prestolite # 8EM2003KA)
Schematic
Audio Warning System
Schematic
Carburetor And Linkage
Schematic
Crankshaft / Pistons / Connecting Rods
Schematic
Cylinder Block And Camshaft
Schematic
Cylinder Head And Rocker Cover
Schematic
Distributor And Ignition Components
Schematic
Driveshaft And Tailstock
Schematic
Electrical Components (Serial # 0A398941 Thru 0D763854)
Schematic
Electrical Components (Serial # 0D763855 Thru 0D937011)
Schematic
Exhaust Cover (420)
Schematic
Exhaust Manifold / Elbow (420 GIL System)
Schematic
Exhaust Manifold / Elbow (425 GIL System)
Schematic
Exhaust Manifold / Elbow (Mercruiser System)
Schematic
Flywheel Housing
Schematic
Fuel Pump And Fuel Filter (Serial # 0A398941 Thru 0D725499)
Schematic
Fuel Pump And Fuel Filter (Serial # 0D763855 Thru 0D937011)
Schematic
Intake Manifold And Front Cover
Schematic
Mount Plates (Engine)
Schematic
Oil Cooler (Serial # 0A398941 Thru 0D725499)
Schematic
Oil Cooler (Serial # 0D725500 Thru 0D937011)
Schematic
Oil Pan And Oil Pump (Serial # 0A398941 Thru 0D725499)
Schematic
Oil Pan And Oil Pump (Serial # 0D725500 Thru 0D937011)
Schematic
Power Steering Components
Schematic
Power Steering Cylinder Assembly
Schematic
Seawater Pump Assembly (Serial # 0A398941 Thru 0D725499)
Schematic
Seawater Pump Assembly (Serial # 0D725500 Thru 0D937011)
Schematic
Starter And Alternator Mounting
Schematic
Starter Assembly (50-17251A3)
Schematic
Thermostat Housing (420)
Schematic
Thermostat Housing (425)
Schematic
Transmission And Related Parts
Schematic
Transmission And Shift Linkage
Schematic
Transmission And Tailstock
Schematic