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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
3L V6 Engines 1985-1995 (90 degree / 12-Bolt intake manifold applications)
Replaces 0985587 / 985587 / 0986654 / 986654 / 0987498 / 987498 / 0987661 / 987661 / Sierra 18-2245-1
Will need new Bearings
(The earlier GDP Models used a 4-piece gasket which resulted in extra mounting holes in the oil pan)
806751A1 Rocker Valve Arm (x8)
MerCruiser Sierra 18-2180 45-42634 Driveshaft Alpha One Gen 1 Lower Unit 1983-90 50hp 3L V6 Engines 1985-1995 (90Item Details Sierra Marine 18 2180 MerCruiser Lower Unit Drive Shaft Equivalent to 45 42634 used in all MerCruiser MR & Alpha One Gen I lower units 1983 1990 <<< Please make sure that the one you are replacing does not have a pre load pin**** If you are looking for one with a preload pin (1970 1982), please contact us and we should be able to help. Very little Normal wear on the splines. We left the bearing on here, it should be good, but you will
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