Mercruiser outdrive parts drawing *Videos *SEI sterndrive

Mercruiser bearing application chart *Upper gearcase

Drive gear bearings Driven gear bearings Tapered bearings upper gearcase photo and information page Roller bearings and ball bearings for the lower gearcase are also available Seal kit (upper) Serial numbers with gear ratio and year Please see MerCruiser upper gearcase drawing for more bearings and components

Model	Gear Ratio	Years	Serial Numbers	Seal Kit (upper)	Drive Gear Bearing	Driven Gear Bearing	Cover top bearing
120-140	1.98	1967	2062141-2187468	87500	21520	21540	21540
120-140	1.98	1967-71	2187469-3134193	87500	21520	21540	21511
120-140	1.98	1971-82	3213658-6225576	87500	21520	21540	21510
470-485	1.84	1976-82	4208730-6225575	87500	21520	21540	21540
160	1.68	1967	2065190-2182197	87500	21520	21540	21511
160	1.68	1967-71	2182198-3134193	87500	21520	21540	21510
165	1.65	1971-81	3213658 thru	87500	21520	21540	21510
888	1.50	1974 thru	3784375 thru	87500	21520	21540	21510
225-S	1.50	1974	3856268-4200499	87500	21520	21540	21510
233	1.32	1975-77	4200500 thru	87500	-	21550	21510
898-228	1.65	1977-82	4782330-6225576	87500	21520	21540	21510
250	1.32	1977	4791300-4898729	87500	-	21550	21510
260	1.50	1978-82	4898730-6225576	87500	21520	21540	21510
lll	ALL	1968-1972	2373127-3002613	87500	-	-	N/A
215H	ALL	1970	2782203-2909034	87500	-	N.L.A.	N/A

T.C. Electronics/Marine (416) 751-7326 Copyright 2002 to 2026 all rights reserved