Mercury 18643A5 Triangular Shape Flywheel Mount Engine Coupler Kit - 3.0L, 4.5L MPI, V6 and V8 MerCruiser Engines Made by General Motors (305 and 350 cid) with MerCruiser Alpha Sterndrives FHTRIM3 Wires connect in either order

Wires connect in either order Works will all Blue Sea Systems devices that require a temperature sensor

Weather Seal

Use all existing mounting holes

Marine Fabric Guard - 32oz

Thread the mono-filament through the locknut or seacock

Mercury 18643A5 Triangular Shape Flywheel Mount Engine Coupler Kit - 3.0L, 4.5L MPI, V6 and V8 MerCruiser Engines Made by General Motors (305 and 350 cid) with MerCruiser Alpha Sterndrives FHTRIM3 Wires connect in either orderTriangular shaped flywheel mount engine coupler kit 18643A5 is for 3. 0L (model year 1999 2016), 4. 5L MPI, V6 and V8 MerCruiser engines made by General Motors (305 and 350 cid) (model year 1993 2015) with MerCruiser Alpha sterndrives. See your service or parts manual for specific applications. Product Details Manufacturer part number: 18643A5 For select MerCruiser Alpha engines and sterndrives Fits MCM 3. 0L (1999 2016), 4. 5L MPI, GM Includes