Mercury 4-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 4 Hp 4 (1 CYL. PRODUCT OF USA) 5595532 & Up Go 7143688 & Up Go 9258281 & Up Go 8068065 & Up Go 4 (2-STROKE) 0G710613 THRU 0T894438 Go 0T894439 & Up Go 0P017000 THRU 0P400999 Go 0P401000 & Up Go 4 (4-STROKE) 0R000001 THRU 0R067089 Go 0R067090 THRU 0R411837 Go 0R411838 & Up Go 0P073456 THRU 0P400999 Go 0P401000 THRU 0R411837 Go 4/5 (1 CYL. PRODUCT OF JAPAN) 0A809601 THRU 0A855096 Go 9477830 THRU 9589153 Go 4/5 0A855097 THRU 0G710612 Go 9589154 THRU 0P016999 Go 4.5 (1 CYL.) 5595532 & Up Go 7147238 & Up Go 9258281 & Up Go 8068065 & Up Go