OMC Stern Drive Year	Litre	Upper gear case	Lower gear case
1982	2.5 Litre 120 hp	21 / 18 Upper	13 / 26 Lower
1982	3 Litre 140 hp	21 / 18 Upper	13 / 26 Lower
1982	3.8 Litre 170 hp	21 / 20 Upper	14 / 26 Lower
1982	5 Litre	21 / 17 Upper	14 / 26 Lower
1982	5.7 Litre	21 / 16 Upper	14 / 26 Lower
1983	2.5 Litre 120 hp	21 / 18 Upper	13 / 26 Lower
1983	3 Litre 140 hp	21 / 18 Upper	13 / 26 Lower
1983	3.8 Litre 170 hp	21 / 20 Upper	15 / 23 Lower
1983	5 Litre	21 / 17 Upper	15 / 23 Lower
1983	5.7 Litre	21 / 16 Upper	15 / 23 Lower
1984	2.5 Litre 120 hp	21 / 18 Upper	13 / 26 Lower
1984	3 Litre 140 hp	21 / 18 Upper	13 / 26 Lower
1984	3.8 Litre 170 hp	21 / 20 Upper	15 / 23 Lower
1984	5 Litre	21 / 17 Upper	15 / 23 Lower
1984	5.7 Litre	21 / 16 Upper	15 / 23 Lower
1985	2.5 Litre 120 hp	21 / 18 Upper	13 / 26 Lower
1985	3 Litre 140 hp	21 / 18 Upper	13 / 26 Lower
1985	3.8 Litre 170 hp	21 / 20 Upper	15 / 23 Lower
1985	5 Litre	21 / 17 Upper	15 / 23 Lower
1985	5.7 Litre	21 / 16 Upper	15 / 23 Lower
1986	2.5 Litre 120 hp	21 / 18 Upper	13 / 26 Lower
1986	3 Litre 140 hp	21 / 18 Upper	13 / 26 Lower
1986	3.8 Litre 170 hp	21 / 20 Upper	15 / 23 Lower
1986	5 Litre	21 / 17 Upper	15 / 23 Lower
1986	5.7 Litre	21 / 16 Upper	15 / 23 Lower

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