Mercury 99-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 9.9 Hp 9.8 5206550 & Up Go 7127388 & Up Go 8057545 & Up Go 9217756 & Up Go 9.8 (2 CYL.)(International) 0N007788 THRU 0N055109 Go 9.8 SEAPRO (2 Cyl.)(International) 0N055110 & Up Go 9.9 0A197112 THRU 0D280999 Go 0D281000 THRU 0G760299 Go 0G760300 THRU 0T979999 Go 0T980000 THRU 0T999999 Go 1B000001 & Up Go 9461526 THRU 9792199 Go 9792200 THRU 0P016999 Go 0P017000 THRU 0P325499 Go 0P325500 & Up Go 9.9 (2 CYL.) (International) 0N059858 & Up Go 9.9 (4-STROKE)(209cc) 0R042475 & Up Go 0P325500 & Up Go 9.9 (4-STROKE)(232 cc) 0H000058 THRU 0H016909 Go 9.9 (4-STROKE) (323 cc) 0G760300 THRU 1B226999 Go 0P075166 THRU 0P400999 Go 110 1470349 THRU 1865778 Go 1865779 THRU 2798056 Go 2798057 THRU 3263262 Go 3263263 THRU 3795657 Go 3795658 THRU 4839253 Go 4839254 THRU 5206549 Go 8050625 THRU 8057544 Go 7027323 THRU 7111347 Go 7111348 THRU 7125387 Go 9041439 THRU 9165304 Go 9165303 THRU 9217755 Go 8015040 THRU 8050624 Go