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$512.92
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The Quicksilver 18643A7 is a genuine OEM triangular-shaped, flywheel-mount engine coupler kit designed for select MerCruiser Alpha stern drive applications. This kit includes a yoke and is manufactured by Mercury Marine to meet original equipment specifications, ensuring a precise fit and reliable power transfer between the engine and stern drive.
The engine coupler is a critical drivetrain component that connects the engine flywheel to the stern drive input shaft. Replacing a worn or damaged coupler with a genuine OEM part helps maintain proper alignment, reduces vibration, and protects downstream drivetrain components.
Key Features:
Specifications:
Consult your MerCruiser service manual or parts manual to confirm the correct application before installation.
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