Mercury 18643A7 Triangular Shape Flywheel Mount Engine Coupler Kit ADDOAR3 on-board CNG (natural gas) fuel

on-board CNG (natural gas) fuel system

General Motors GM1899M (Performance corresponding to GM6038M)

*The ability to effectively avoid running aground with FrontVü sonar decreases as speed rises above 8 knots

Manufacturer Part Number 8376-BSS Key Features

Mercury 18643A7 Triangular Shape Flywheel Mount Engine Coupler Kit ADDOAR3 on-board CNG (natural gas) fuelTriangular shaped flywheel mount engine coupler kit 18643A7 is for General Motors made MerCruiser V6 & V8 (305 & 350 cid) engines (1983 1993) & 454 Mag engines with Alpha sterndrives. See your service or parts manual for specific applications. Product Details Manufacturer part number: 18643A7 For select MerCruiser Alpha engines and sterndrives