New 12¾ inch flywheel for 1990 and later 3.0L/181ci marine engine. This 12 3/4" flywheel is required when using post 1990 long block to replace a Pre-1990 engine. (Mercruiser, OMC). This flywheel will fit your existing starter and bellhousing in Pre-1990 3.0L engines applications.
Mercruiser Bravo Engine Coupler by Sierra. Will work on Bravo I,Bravo II, and Bravo III. Includes all mounting hardware. Replaces: Mercruiser 18311A17, Mercruiser 861523A-9, Mercruiser 8M0098795, Mallory 9-72503, and Sierra- 18-2412.
This triangular style engine coupler is for GM 4 cylinder engines with late style, small crankshaft bolt pattern. Fits 3.0L/181ci Engines where the coupler mounts to the Flywheel and not the crankshaft. Replaces Mercruiser 12632A6. Includes Mounting Hardware.