Engine Coupler OEM #12632A6

Sierra 18-2321 Engine Coupler Without later yoke fits 3.0-Liter 4-Cylinder GM Chevy Engines 1990-1997 and some 1998 with 12-3/4" flywheel engines with 1-piece rear main seal, 3" crankshaft bolt pattern flywheel and Mercruiser Alpha sterndrive. Replaces Mercruiser # 12632A6. Same as 18-2195 but without the yoke. If replacing the original coupler with the original input yoke without the sealed shaft to coupler joint, order 18-2195 kit. Note: NOT for Mercruiser 4-cylinder 3.7-Liter (Aluminum Block) engines. Includes mounting bolts and washers.