0582628 0387432 Johnson 90HP Crank & Head Bearing Assy | Genuine Used Part

🔧 Product Description

Genuine Johnson V4 Flywheel and Crankcase Head Bearing Assembly - Part Numbers: 0582628 / 0387432

A genuine Johnson / Evinrude rotating-system component set for selected 90HP V4 crossflow two-stroke outboards.

Part number 0582628 identifies the V4 flywheel, while 0387432 identifies the crankcase-head and upper-bearing assembly. The parts are supplied together as listed and should be matched to the engine's crankshaft taper, ignition system and crankcase configuration.

⚙️ Key Features

• Genuine Johnson / Evinrude OMC components
• Includes V4 flywheel 0582628
• Includes crankcase head and bearing assembly 0387432
• Crankcase-head assembly superseded by 0385504
• Used on selected 90HP V4 crossflow outboards

🚤 Compatibility

Commonly used on

• Johnson and Evinrude V4 crossflow crankshaft and ignition assemblies
• 90HP engines using flywheel 0582628 and crankcase-head assembly 0387432

Typically suits

• Engine models:
• 1984 Johnson 90HP V4 crossflow
• 1984 Evinrude 90HP V4 crossflow
• 1985 Johnson 90HP V4 crossflow
• 1985 Evinrude 90HP V4 crossflow
• 1986 Johnson 90HP V4 crossflow
• 1986 Evinrude 90HP V4 crossflow
• 1987 Johnson 90HP V4 crossflow
• 1987 Evinrude 90HP V4 crossflow
• Selected 88HP, 100HP, 110HP, 115HP and 140HP V4 engines using flywheel 0582628, subject to crankcase-head compatibility
• HP Range: Matched listing for 90HP; flywheel family approximately 88HP - 140HP
• Engine Type: Johnson / Evinrude V4 crossflow carburetted two-stroke outboard
• Year Range: Approximately 1984 - 1987 for the matched 90HP application

🔌 Function

The flywheel carries the ignition magnets and stores rotational energy, while the crankcase-head assembly supports and locates the upper crankshaft bearing.

⚠️ Common Signs of Failure

• Flywheel magnets loose, damaged or heavily corroded
• Flywheel taper or keyway damaged
• Upper bearing noisy, rough or loose
• Bearing housing cracked or worn
• Excessive crankshaft movement at the upper bearing

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 0385504 → Supersedes 0387432
• 0387432 earlier crankcase-head and bearing assembly
• 0321238 related head casting reference
• 0582628 current documented V4 flywheel reference for the applicable ignition family

OEM / Related Numbers

• 0582628
• 582628
• 0387432
• 387432
• 0385504
• 385504
• 0321238
• 321238

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated