Sierra Marine 18-21752-1 Engine Coupler
Sierra 18-21752-1 Engine coupler for 1-piece rear main seal engines. Replaces OMC part #'s 3858437, 984290, 986120, and 3853917. Fits the following applications, 4.3-L 1986 to 1998, 5.0-L 1986 to 1988, 1998, and 5.7-L 1986 to 1992, 1994, 1996 to 1998 engines with 3" crankshaft bolt pattern circle..
| Brand | Sierra |
|---|---|
| Cross Reference / Specs | 984290 3858437 986120 3853917 3858437-1
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