Mercury 250-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 250 Hp 250 (3.0L EFI) 0G129222 THRU 0G760299 Go 0G760300 THRU 0T408999 Go 0T409000 THRU 0T800999 Go 0T801000 THRU 1B417701 Go 1B417702 THRU 1B504988 Go 1B504989 & Up Go 250 LONG (3.0L)(EFI) 0T861319 & Up Go 250XB (3.0L EFI) 0G980600 THRU 0T800999 Go 250 (DFI) 3.0L 1B528615 & Up Go 250 PRO XS (3.0L DFI) 1B426561 THRU 1B752546 Go 1B752547 & Up Go 250 VERADO (4-STROKE)(6 CYL.) 0T980000 THRU 1B226999 Go 1B227000 THRU 1B381711 Go 1B381712 THRU 1B517433 Go 1B517434 THRU 2B144122 Go 2B144123 & Up Go 0P409357 THRU 0P464487 Go 0P464488 THRU 0P520552 Go 0P520553 THRU 2B144122 Go 250 PRO VERADO (4-STROKE)(6 CYL.) 1B830170 THRU 2B144122 Go 250 PRO VERADO (4-Stroke)(6 CYL.) 2B144123 & Up Go 250/275 0C101891 AND UP Go 3.0L EFI SEAPRO 0T409000 THRU 0T800999 Go