Mercury 55-HP Engines Parts Catalog Search Diagrams by Model 2 HP 3 HP 4 HP 5 HP 6 HP 7 HP 8 HP 9.9 HP 10 HP 15 HP 18 HP 20 HP 25 HP 30 HP 35 HP 40 HP 45 HP 50 HP 55 HP 60 HP 65 HP 70 HP 75 HP 80 HP 85 HP 90 HP 95 HP 100 HP 110 HP 115 HP 125 HP 135 HP 140 HP 150 HP 175 HP 200 HP 220 HP 225 HP 250 HP 275 HP 300 HP 350 HP 400 HP HP/Displacement Serial Range top top 55 Hp 55 (3 CYL.) 0D000750 THRU 0G290584 Go 0G290585 THRU 0G589999 Go 0G590000 THRU 0G760299 Go 0G760300 THRU 0T979999 Go 0T980000 & Up Go 9741042 THRU 9885344 Go 9885345 THRU 9973099 Go 9973100 THRU 0P016999 Go 0P017000 THRU 0P325499 Go 0P325500 & Up Go