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Your serial number is coming up as an 2003 60-HP MERCURY NITRO TRACKER ELPTO / Model Number 1060412AN (3 CYLINDER / 2-Stroke).
http://www.marineengine.com/parts/mercury_marine_parts/sn/OT622492
For the Fuel Pump, Electric system, item number 18 will be the fuel filter design, http://www.marineengine.com/parts/mercury_marine_parts/sn/0T622492/1060412AN/3371_80
For the Fuel Pump, Manual system, item number 22 (Old # 35-891642T03 which superseded into #35-8M0063726) would be the fuel filter design, http://www.marineengine.com/parts/mercury_marine_parts/sn/0T622492/1060412AN/3371_90
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=891642T03&_sacat=0
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=35-8M0063726&_sacat=0
http://www.marineengine.com/newparts/part_search.php?part_num=35-8M0063726