The BRP / OMC part number 0387817 (also written as 387817) is a genuine factory original equipment (OEM) tapered roller bearing assembly. It functions as a critical pinion bearing or gearcase drive shaft bearing within the lower unit gear housing of heavy-duty, high-horsepower vintage Johnson and Evinrude outboard engines.

New Old Stock (NOS) — genuine factory original part.

Fitment and Compatibility

This structural bearing assembly is engineered specifically for large-gearcase, high-output outboard models and OMC Sea Drive systems:

• Horsepower Range: Primarily fits high-power 155 HP to 300 HP V6 and V8 engine configurations.
• Production Eras: Extensively used across models manufactured between 1985 and 1995.

Features and Supersedions

• Critical Component: Located at the base of the drive shaft, this tapered bearing handles intense thrust and radial loads produced by the pinion gear while the engine is running.
• Superseded Numbers: This legacy bearing assembly replaces or has been superseded by part number 5007751 across older technical manuals.

Cross-References & Equivalent Parts

Replaces OEM 0387817. Equivalent to the following aftermarket and OEM part numbers:

• 18-1117 – Sierra Marine
• 93-102-14 – SEI Marine
• REC387817 – Recmar Marine
• 778255 – Evinrude Johnson OMC BRP
• 387817 – Evinrude Johnson OMC BRP
• JE-B42 – OBR Red Rhino
• 21610 – GLM