Sierra 18-5678 Starter Drive Assembly, Replaces 387683, for Johnson/Evinrude Outboard Motors, White

The Sierra 18-5678 Starter Drive Assembly is a direct replacement drive assembly for Johnson and Evinrude outboard motor starters. This component engages the starter motor with the flywheel ring gear to turn the engine over during starting, and is a common wear item that can fail or stick over time from corrosion, worn splines, or a damaged pinion. Replacing a worn or sticking drive assembly restores reliable starter engagement without the cost of a full starter motor replacement.

Sierra manufactures this drive assembly to work as a direct equivalent for OEM part 387683, so it installs using the same fit and function as the original component it replaces. It is finished in white and built for outboard starter applications where the original drive assembly has worn out or become damaged.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5678
• Product Type: Starter Drive Assembly
• Color: White
• Material: Glass
• Weight: 0.33 pounds
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Country of Origin: Taiwan
• UPC: 808282259419

Fitment

Designed for Johnson and Evinrude outboard motor starters.

Replaces (OEM)

• 387683

Frequently Asked Questions

What does the Sierra 18-5678 Starter Drive Assembly fit? The Sierra 18-5678 is built for Johnson and Evinrude outboard motor starters, replacing the drive assembly that engages the starter with the flywheel ring gear.

Is the 18-5678 a direct replacement for OEM part 387683? Yes, Sierra 18-5678 is manufactured to replace OEM part number 387683, matching its fit and function in the starter assembly.

What color is the Sierra 18-5678 drive assembly? It is finished in white.

How much does the Sierra 18-5678 Starter Drive Assembly weigh? The Sierra 18-5678 weighs 0.33 pounds.

What are the dimensions of the 18-5678 drive assembly? Item dimensions for the Sierra 18-5678 are 0.39 x 0.39 x 0.39 inches.

Where is the Sierra 18-5678 manufactured? The country of origin for the Sierra 18-5678 Starter Drive Assembly is Taiwan.

What signs indicate my outboard's drive assembly needs replacement? A starter that spins without engaging the flywheel, grinding noises during cranking, or a starter that fails to turn the engine over can indicate a worn or damaged drive assembly like the one replaced by Sierra 18-5678.

Does the 18-5678 include the full starter motor? No, the Sierra 18-5678 is a starter drive assembly only, not a complete starter motor.

Is Sierra 18-5678 a genuine OEM part or aftermarket? Sierra 18-5678 is an aftermarket replacement engineered to replace OEM part 387683 on Johnson/Evinrude outboard starters.

What material is the Sierra 18-5678 drive assembly made of? The Sierra 18-5678 Starter Drive Assembly is made of glass.

What is the UPC for the Sierra 18-5678? The UPC for the Sierra 18-5678 Starter Drive Assembly is 808282259419.